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Low [CVE-2026-56377] ImageMagick - Policy Bypass via Incorrect Path Validation
ImageMagick before 7.1.2-24 contains an incorrect policy check that allows attackers to create or truncate files disallowed by security policies. Remote attackers can bypass path policy restrictions in sandboxed conversion services to write arbitrary files outside intended boundaries. By circumventing these controls, an attacker can create or truncate files outside permitted security boundaries, leading to unauthorized file manipulation. This could lead to the creation or truncation of files outside of intended boundaries, potentially affecting data integrity in specific configurations where ImageMagick processes untrusted input in a sandboxed environment. Red Hat severity: Low — CVSS 3.3 (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N). Weakness: CWE-22. Affected Red Hat products: Red Hat Enterprise Linux 6; Red Hat Enterprise Linux 7. Will not fix / out of support: Red Hat Enterprise Linux 6; Red Hat Enterprise Linux 7. Red Hat does not currently list a fixing RHSA for this CVE. Affected products named by the advisory: Red Hat package: imagemagick.
Low [CVE-2026-56369] Information disclosure due to AES-CTR nonce reuse
ImageMagick before 7.1.2-22 contains an information disclosure vulnerability in the PasskeyEncipherImage method due to AES-CTR nonce reuse. Attackers can exploit nonce reuse in the cipher implementation to recover plaintext information from encrypted images. A vulnerability has been identified in ImageMagick, a software tool used to create, edit, and convert image files. This flaw allows a remote attacker to potentially decrypt and view images that were supposed to be securely encrypted by the software, leading to an unauthorized disclosure of sensitive data. Exploitation requires an attacker to specifically target encrypted images processed by this method, which is not a common default configuration in Red Hat environments. The vulnerability primarily affects applications utilizing the `PasskeyEncipherImage` function, potentially through bindings like Magick.NET. Red Hat severity: Low — CVSS 3.7 (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N). Weakness: CWE-323. Affected Red Hat products: Red Hat Enterprise Linux 6; Red Hat Enterprise Linux 7. Will not fix / out of support: Red Hat Enterprise Linux 6; Red Hat Enterprise Linux 7. Red Hat does not currently list a fixing RHSA for this CVE. Affected products named by the advisory: Red Hat package: imagemagick.
Low [CVE-2026-56365] Magick.NET-Q8-AnyCPU: Magick.NET-Q8-OpenMP-arm6…
ImageMagick before 7.1.2-19 contains a memory leak vulnerability in the PNG encoder when writing MNG images. Attackers can trigger the encoder failure condition to exhaust memory resources and cause denial of service. A flaw was found in ImageMagick. This issue is categorized as a memory leak (CWE-401). While the flaw can exhaust system memory, it requires an application to process a specially crafted MNG image, limiting the attack surface in typical Red Hat deployments. Red Hat severity: Low — CVSS 3.7 (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L). Weakness: CWE-401. Affected Red Hat products: Red Hat Enterprise Linux 6; Red Hat Enterprise Linux 7. Will not fix / out of support: Red Hat Enterprise Linux 6; Red Hat Enterprise Linux 7. Red Hat does not currently list a fixing RHSA for this CVE. Affected products named by the advisory: Red Hat package: imagemagick.
Low [CVE-2026-56364] Magick.NET-Q16-HDRI-arm64: Magick.NET-Q16-HDRI-…
ImageMagick before 7.1.2-13 contains a memory leak vulnerability in LoadOpenCLDeviceBenchmark() function when parsing malformed OpenCL device profile XML files with unclosed device elements. Attackers with write access to the OpenCL cache directory can place malicious XML files to exhaust memory and cause denial of service. A Denial of Service (DoS) vulnerability exists in ImageMagick. An attacker with write access to the OpenCL cache directory can exhaust system memory and crash the application by placing a maliciously crafted file. This vulnerability in ImageMagick is of Low impact. Under these conditions, a specially crafted XML file can cause a memory leak, leading to resource exhaustion and a denial of service over extended periods. Red Hat severity: Low — CVSS 1.9 (CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:L). Weakness: CWE-401. Under investigation: Red Hat Enterprise Linux 6; Red Hat Enterprise Linux 7.
Low [CVE-2026-56363] ImageMagick - Division by Zero in Binomial Kernel Processing
ImageMagick before 7.1.2-22 contains a division by zero vulnerability in binomial kernel processing that allows attackers to cause denial of service. An attacker can supply a large binomial kernel value causing integer overflow, resulting in division by zero and application crash. An attacker can crash the application and cause service unavailability by submitting a maliciously crafted image. This flaw in ImageMagick is rated as Low impact. An attacker can trigger a denial of service by providing a specially crafted image that, when processed, causes an integer overflow and subsequent division by zero. This issue requires user interaction, as the vulnerable ImageMagick instance must process the malicious input. Red Hat severity: Low — CVSS 3.3 (CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L). Weakness: CWE-190. Affected Red Hat products: Red Hat Enterprise Linux 6; Red Hat Enterprise Linux 7. Will not fix / out of support: Red Hat Enterprise Linux 6; Red Hat Enterprise Linux 7. Red Hat does not currently list a fixing RHSA for this CVE. Affected products named by the advisory: Red Hat package: imagemagick.
Low [CVE-2026-56361] Heap buffer overflow via incorrect morphology parameters
ImageMagick before 7.1.2-19 contains an off-by-one error in morphology validation allowing out-of-bounds heap buffer reads. Attackers can trigger heap buffer overflow by providing incorrect morphology parameters causing single pixel memory access violations. A flaw was found in ImageMagick. An attacker can exploit an off-by-one error in the morphology validation by providing incorrect morphology parameters. This can lead to out-of-bounds heap buffer reads and heap buffer overflow, potentially causing memory access violations. This flaw in ImageMagick is rated as Low impact. An attacker can trigger a memory access violation by submitting a maliciously crafted image. Red Hat severity: Low — CVSS 3.3 (CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L). Weakness: CWE-125. Affected Red Hat products: Red Hat Enterprise Linux 6; Red Hat Enterprise Linux 7. Will not fix / out of support: Red Hat Enterprise Linux 6; Red Hat Enterprise Linux 7. Red Hat does not currently list a fixing RHSA for this CVE. Affected products named by the advisory: Red Hat package: imagemagick.
Low [CVE-2026-58371] Information disclosure via unvalidated JSONP callback parameter
SeaweedFS before 4.30 reflects the callback query parameter verbatim into responses served with Content-Type application/javascript in the shared writeJson helper (weed/server/common.go), with no callback-name validation, no X-Content-Type-Options: nosniff header, and no CORS allow-list. Every JSON endpoint that uses writeJson - including the unauthenticated master endpoints /dir/status, /dir/lookup and /cluster/status, the volume server /status, and the filer directory listing, all reachable in the default configuration (no -whiteList, no security.toml, bound to 0.0.0.0) - can therefore be loaded cross-origin via a script tag with a chosen callback, letting a third-party web page read cluster topology, volume server URLs and gRPC ports, file identifiers, and directory listings. Because the callback string is reflected at the start of the body and no nosniff header is sent, MIME-sniffing clients may also interpret the reflected content as HTML. A flaw was found in SeaweedFS. This vulnerability allows a remote attacker to disclose sensitive information by exploiting an unvalidated JSONP (JavaScript Object Notation with Padding) callback parameter. The system reflects the callback parameter directly into responses without proper validation or security headers, enabling cross-origin loading of JSON endpoints. Affected product named by the advisory: Cryostat 4.
Low [CVE-2026-37106] Unauthorized account creation via registration function
An issue in DokuWiki 2025-05-14b "Librarian" 56.2 allows a remote attacker to create an account via the register function in inc/auth.php. NOTE: this is disputed by the Supplier because this is the intentional behavior when the product is configured for self-registration (a non-default feature). The supplier also notes that there is no configuration migration scenario that would result in the self-registration being enabled without the administrators knowledge. A flaw was found in DokuWiki. This occurs when the DokuWiki instance is configured to allow self-registration, which is not the default setting. This could lead to the creation of unauthorized user accounts. An attacker could create unauthorized user accounts if this non-default feature is enabled. Red Hat severity: Low — CVSS 3.7 (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N). Weakness: CWE-306.
High [CVE-2026-55607] @anthropic-ai/claude-code: Claude Code: Arbitrary code execution through git directory confusion
Claude Code is an agentic coding tool. From 2.1.38 until 2.1.163, Claude Code's worktree handling allowed creation of worktrees named ".git" and navigation to worktrees outside the sandbox context, enabling git directory confusion attacks. By exploiting symlink manipulation and git fsmonitor execution during worktree operations, an attacker could overwrite files in the user's home directory (such as.zshenv), leading to code execution outside of seatbelt sandbox restrictions. Reliably exploiting this required the user to clone a malicious repository containing prompt injection content and run Claude Code against it. This vulnerability is fixed in 2.1.163. This vulnerability allowed the creation of specially named worktrees and navigation outside of the intended secure environment, leading to what is known as a 'git directory confusion attack'. By manipulating symbolic links and how git monitors file system changes, an attacker could overwrite important user files, potentially leading to unauthorized code execution on the user's system. This attack requires a user to interact with a malicious code repository. Red Hat severity: Important — CVSS 7.1 (CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H). Weakness: CWE-59. Affected Red Hat products: OpenShift Lightspeed. Red Hat does not currently list a fixing RHSA for this CVE.
High [CVE-2026-13676] Security policy bypass due to improper Unicode hostname canonicalization
fast-uri versions 2.3.1 through 3.1.2 and 4.0.0 fail to canonicalize Unicode (IDN) hostnames for HTTP-family URLs. The IDN conversion path calls a helper that does not exist on the global URL constructor, silently leaving the host in its original Unicode form while normalize() and equal() still return values that differ from a WHATWG-compatible URL parser. Applications that use fast-uri to enforce host-based policy (denylists, loopback filtering, redirect validation, outbound proxy routing) before passing the same URL to Node's URL or fetch can be bypassed when the two implementations resolve the same input to different hosts. Patches: upgrade to fast-uri 3.1.3 for the 3.x line or 4.0.1 for the 4.x line. Workarounds: enforce host policy using the same URL parser used for the actual request, or reject non-ASCII hosts before policy checks. A remote attacker could exploit this to circumvent security controls and potentially access unauthorized resources or perform malicious redirects. This Important flaw in `fast-uri` allows a remote attacker to bypass host-based security policies. Applications that rely on `fast-uri` for URL parsing and policy enforcement, such as denylists or redirect validations, can be circumvented due to inconsistent handling of Unicode hostnames.
High [CVE-2026-54369] Symlink traversal privilege escalation via libacl functions
acl before version 2.4.0 contains a symlink traversal vulnerability in the libacl pathname-based functions acl_get_file(), acl_set_file(), acl_extended_file(), and acl_delete_def_file() that allows local attackers to escalate privileges by replacing any pathname component with a symbolic link. Attackers who control any component of a pathname processed by a privileged caller can redirect ACL read or write operations to arbitrary files or directories, enabling unauthorized manipulation of access control lists and local privilege escalation. A flaw was found in the `acl` package, specifically within its `libacl` pathname-based functions. Exploitation requires local access with the ability to create symlinks in a directory that a privileged program later processes with acl_get_file() or acl_set_file(). In default RHEL and OpenShift CoreOS configurations, standard file permission settings limit where unprivileged users can create symlinks, reducing the practical attack surface. Programs that operate on user-supplied paths with elevated privileges are most at risk. Red Hat severity: Important — CVSS 7.1 (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N). Weakness: CWE-59. Affected products named by the advisory: Red Hat Enterprise Linux 10; Red Hat Enterprise Linux 8; Red Hat Enterprise Linux 9; Red Hat OpenShift Container Platform 4.22; and 8 more.
High [CVE-2026-12856] Command Injection vulnerability in the JavaDoc hover provider of the vscode-java extension
A flaw was found in the vscode-java extension, which provides Java language support for Visual Studio Code. The extension incorrectly trusts all Markdown content in JavaDoc hovers, allowing a malicious Java file to include hidden commands. If a user clicks a specially crafted link within a JavaDoc hover popup, an attacker can execute arbitrary VS Code commands, which can lead to full system compromise in trusted workspaces. The Red Hat Product Security team has assessed the severity of this vulnerability as Important, given that it requires a user to open a malicious Java source file and interact with a hover popup. Successful exploitation allows an attacker to execute arbitrary commands within the context of the VS Code editor and potentially the underlying operating system. The vulnerability's root cause is the over-trusting of Markdown content returned by the Java language server, which fails to isolate extension-generated trusted links from attacker-controlled JavaDoc content. Weakness: CWE-88. Affected Red Hat products: Red Hat OpenShift Dev Spaces 3.29. Red Hat fixing advisory: RHSA-2026:36820.
Medium [CVE-2026-55956] Improper Authorization Allows Security Constraint Bypass
Improper Authorization vulnerability in Apache Tomcat leads to security constraints specified for the default servlet ignoring any method or method omission configured as part of the constraint. This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.22, from 10.1.0-M1 through 10.1.55, from 9.0.0.M1 through 9.0.118, from 8.5.0 through 8.5.100, from 7.0.0 through 7.0.109. Other versions that have reached end of support may also be affected. Users are recommended to upgrade to version 11.0.23, 10.1.56 or 9.0.119, which fix the issue. A flaw was found in Apache Tomcat where access control rules for the default servlet are improperly handled. An attacker can exploit this issue to bypass specific HTTP method restrictions, potentially gaining unauthorized access to protected application resources. Red Hat products utilizing affected Tomcat versions are vulnerable if they rely on these method-specific security constraints. Red Hat severity: Moderate — CVSS 6.5 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N). Weakness: CWE-551. Affected products named by the advisory: Red Hat JBoss Web Server 6.2.4; Red Hat JBoss Web Server 6.2 on RHEL 10; Red Hat JBoss Web Server 6.2 on RHEL 8; Red Hat JBoss Web Server 6.2 on RHEL 9; and 14 more.
Medium [CVE-2026-55955] Replay attack via improper authentication in EncryptionInterceptor
Improper Authentication vulnerability in Apache Tomcat allowed a replay attack against the EncryptionInterceptor in the cluster component. This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.22, from 10.1.0-M1 through 10.1.55, from 9.0.13 through 9.0.18, from 8.5.38 through 8.5.100, from 7.0.100 through 7.0.109. Users are recommended to upgrade to version 11.0.23, 10.1.56, 9.0.119, which fixes the issue. This could lead to unauthorized access or manipulation of data within the cluster component. A flaw was found in Apache Tomcat's EncryptionInterceptor used for Tribes cluster communication. Exploitation requires the EncryptionInterceptor to be configured for Tomcat clustering, which is a non-default configuration, and the attacker must have access to the cluster network to capture and replay messages. Apache rates this vulnerability as Low severity. Red Hat has corrected the impact from IMPORTANT to MODERATE — the original AI-Bot CVSS of 8.2 (AV:N/AC:L) incorrectly scored this as internet-facing with low complexity, when Tribes cluster traffic is adjacent-network (AV:A) and requires non-default clustering configuration (AC:H). Weakness: CWE-294. Affected Red Hat products: Red Hat Hardened Images; Red Hat Enterprise Linux 10; Red Hat Enterprise Linux 6; Red Hat Enterprise Linux 7; Red Hat Enterprise Linux 8; Red Hat Enterprise Linux 9; Red Hat JBoss Web Server 5.
Medium [CVE-2026-53404] Incorrect control flow in rewrite valve allows unexpected rule processing
Always-Incorrect Control Flow Implementation vulnerability in Apache Tomcat's rewrite valve meant that if the first condition in an OR chain matched, subsequent non-OR conditions were skipped. This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.22, from 10.1.0-M1 through 10.1.55, from 9.0.0.M1 through 9.0.118, from 8.5.0 through 8.5.100. Other versions that have reached end of support may also be affected. Users are recommended to upgrade to version 11.0.23, 10.1.56 or 9.0.119, which fix the issue. This can lead to unintended rule processing, potentially allowing for security bypasses or unauthorized access due to misapplied configurations. A flaw was found in Apache Tomcat's RewriteValve. When rewrite rules use OR-chained conditions followed by non-OR conditions, the processing logic may not evaluate conditions correctly, potentially allowing unintended rule matches. Exploitation requires the RewriteValve to be enabled with specific OR-chained condition patterns, which is not a default configuration. Red Hat severity: Moderate — CVSS 6.5 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N). Weakness: CWE-358. Affected products named by the advisory: Red Hat JBoss Web Server 6.2.4; Red Hat JBoss Web Server 6.2 on RHEL 10; Red Hat JBoss Web Server 6.2 on RHEL 8; Red Hat JBoss Web Server 6.2 on RHEL 9; and 14 more.
Medium [CVE-2026-50229] Cross-Site Scripting vulnerability in number guess example
Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS) vulnerability in the number guess example for Apache Tomcat. This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.22, from 10.1.0-M1 through 10.1.55, from 9.0.0.M1 through 9.0.118, from 8.5.0 through 8.5.100, from 7.0.0 through 7.0.109. Other versions that have reached end of support may also be affected. Users are recommended to upgrade to version 11.0.23, 10.1.56 or 9.0.119, which fix the issue. This vulnerability, known as Cross-Site Scripting (XSS), allows a remote attacker to inject malicious scripts into the 'number guess example' web page. When other users view the compromised page, these scripts can execute in their web browsers. This could lead to unauthorized access to sensitive information or allow an attacker to alter the content of the website. This vulnerability only affects the example web application, not the Tomcat servlet container itself. Red Hat Tomcat packages do not deploy example applications by default — they are in separate optional packages (e.g., tomcat-webapps) that are not installed in production environments. Red Hat severity: Moderate — CVSS 5.4 (CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N). Weakness: CWE-79.
Medium [CVE-2026-46406] @anthropic-ai/claude-code: Claude Code: Information disclosure and file overwrite via insecure temporary file in /copy command
Claude Code is an agentic coding tool. From 2.1.59 until 2.1.128, the Claude Code /copy command wrote responses to a hardcoded, predictable path (/tmp/claude/response.md) without UID isolation, randomness, or symlink protection. The file was created world-readable (0644) in a world-traversable directory (0755), allowing any local user to read a privileged user's Claude response, which could contain secrets or credentials. Additionally, because the path was static and predictable, a local attacker could pre-create the directory and plant a symlink at the expected file path, causing the privileged process to follow the symlink and overwrite an attacker-chosen file with the response text. Exploiting this required a local unprivileged user on the same system and a privileged user to run the /copy command. This vulnerability is fixed in 2.1.128. This allowed a local unprivileged user to read sensitive information from a privileged user's Claude response, potentially containing secrets or credentials. Red Hat rates this Moderate with a CVSS score of 6.8, higher than NIST's 6.1. The difference is in the confidentiality and integrity metrics. Claude Code responses might contain secrets, API keys, credentials, and code, which is why Red Hat scores confidentiality as High rather than Low. Affected product named by the advisory: OpenShift Lightspeed.
Medium [CVE-2026-11979] Arbitrary code execution in xmlcatalog utility via buffer overflow
libxml2 is vulnerable to multiple stack-based buffer overflows in the xmlcatalog utility when running in --shell mode. The usershell() function processes user input using fixed-size stack buffers without proper bounds checking. By supplying an overly long input line, an attacker can overflow internal buffers (command, arg, and argv) during input parsing. This results in memory corruption within the stack frame. Successful exploitation may cause a crash or potentially allow arbitrary code execution in the context of the xmlcatalog process. This issue has been fixed in the commit c2e233fc. NOTE: The maintainers of this project did not agree that this issue is a vulnerability and considered it a bug. An attacker can exploit multiple stack-based buffer overflows by providing an excessively long input line. This vulnerability is limited to scenarios where an attacker can control input to the `xmlcatalog` utility, reducing its overall exposure in typical Red Hat deployments. Red Hat severity: Moderate — CVSS 4.8 (CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:L). Weakness: CWE-120. Affected Red Hat products: Red Hat Hardened Images; Red Hat Enterprise Linux 10; Red Hat Enterprise Linux 6; Red Hat Enterprise Linux 7; Red Hat Enterprise Linux 8; Red Hat Enterprise Linux 9; Red Hat OpenShift Container Platform 4. Red Hat fixing advisory: RHSA-2026:33840.
Medium [CVE-2026-54370] TOCTOU Symlink Traversal via getfacl/setfacl
acl before version 2.4.0 contains a time-of-check to time-of-use (TOCTOU) race condition vulnerability that allows local attackers to escalate privileges by replacing a pathname component with a symbolic link between an lstat() check and subsequent symlink-following operations such as stat(), chown(), chmod(), acl_get_file(), and acl_set_file(). Attackers who control a pathname component can redirect file access control list operations to arbitrary files when getfacl, setfacl, or chacl is invoked by a privileged process over an attacker-controlled path, resulting in local privilege escalation. By replacing a pathname component with a symbolic link between a security check and subsequent file operations, an attacker can redirect file access control list operations. Red Hat severity: Moderate — CVSS 6.3 (CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N). Weakness: CWE-367. Affected Red Hat products: Red Hat Enterprise Linux 10; Red Hat Enterprise Linux 8; Red Hat Enterprise Linux 9; Red Hat Discovery 2; Red Hat Hardened Images; Red Hat Insights proxy 1.5; Red Hat OpenShift distributed tracing 3.10.1; Red Hat Update Infrastructure 5; Red Hat Enterprise Linux 6; Red Hat Enterprise Linux 7; Red Hat OpenShift Container Platform 4. Affected products named by the advisory: Red Hat package: acl.
Medium [CVE-2026-54371] Symlink Traversal Privilege Escalation via getfattr and setfattr
attr before version 2.6.0 contains a symlink traversal vulnerability in the getfattr and setfattr utilities that allows local attackers to escalate privileges by replacing a pathname component with a symbolic link during directory hierarchy traversal. Attackers who control a pathname component can redirect getfattr and setfattr operations to arbitrary files by substituting a symlink, leading to local privilege escalation when getfattr or setfattr is invoked by a privileged process over an attacker-controlled path. A flaw was found in the `attr` package. This Moderate severity flaw in the `getfattr` utility allows a local attacker to achieve privilege escalation. Red Hat severity: Moderate — CVSS 6.3 (CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N). Weakness: CWE-59. Affected Red Hat products: Red Hat Enterprise Linux 8; Red Hat Hardened Images; Red Hat Enterprise Linux 10; Red Hat Enterprise Linux 6; Red Hat Enterprise Linux 7; Red Hat Enterprise Linux 9; Red Hat OpenShift Container Platform 4. Red Hat fixing advisory: RHSA-2026:56133, RHSA-2026:34889. Affected products named by the advisory: Red Hat package: attr.