Red Hat Linux Security Advisories & CVEs
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Latest Red Hat advisories
Critical [CVE-2026-78939] Use after free in Chromecast
Use after free in Chromecast in Google Chrome prior to 152.0.7977.65 allowed a remote attacker who had compromised the renderer process to execute arbitrary code outside the sandbox via a crafted HTML page. (Chromium security severity: High) Upstream bug(s): Red Hat Product Security rates the severity of this flaw as determined by the Google Chrome Security Advisory. Red Hat severity: Important — CVSS 9 (CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H). Weakness: CWE-825.
Critical [CVE-2026-78676] GitPython before 3.1.59 Remote Code Execution via Config Injection
GitPython before 3.1.59 fails to safely re-serialize multi-line git-config values during write operations, corrupting dormant quoted values into injected directives like core.hooksPath. Attackers can craft config files with embedded newlines that become live git directives after any unrelated GitPython config write, enabling arbitrary code execution via hook invocation. Case for AC:H (8.1): the trigger needs two things the attacker does not straightforwardly own: (1) a crafted multi-line quoted value must already sit DORMANT in.git/config — the guarded set_value() path will not put it there; it must arrive via _read() of a file the attacker influenced but does not directly write; and (2) a SUBSEQUENT, UNRELATED GitPython config WRITE must fire to re-serialize and corrupt it — and that write is performed by the victim application on its own schedule, not by the attacker. "Prepare the target environment" + "conditions beyond the attacker's control" is the textbook AC:H definition; step (2) in particular fits it. Red Hat severity: Critical — CVSS 9.8 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H). Weakness: CWE-88. Affected products named by the advisory: Red Hat Ansible Automation Platform 2.5; Red Hat Ansible Automation Platform 2.6; Red Hat Ansible Automation Platform 2.7; Red Hat Satellite 6.18; and 7 more.
High [CVE-2026-57171] Arbitrary file write via path traversal in author generate commands
Compliance-trestle (Trestle) is a Python SDK and command-line tool for managing OSCAL compliance documents. In versions before 3.12.4 and versions 4.0.0 through 4.0.3, the catalog-generate, profile-generate, and ssp-generate author commands write generated Markdown to an attacker-influenced output path without path-traversal validation, allowing arbitrary file write outside the Trestle workspace. These commands join the user-supplied output argument onto the Trestle root and write to the result, but guard it only with an is_directory_name_allowed() task-name-collision check rather than the PathSecurityValidator.validate_local_path() guard used by the jinja command, so an absolute path or one containing traversal sequences escapes the workspace and writes files under an attacker-chosen location as the invoking process owner. The security boundary is crossed when a trusted CI job, shared service, or wrapper derives the output argument from repository-controlled, tenant-controlled, or otherwise untrusted data while expecting output to stay inside the workspace. When --force-overwrite is used, the selected output directory is first recursively deleted, extending the primitive to destruction of an attacker-chosen directory tree and enabling indirect code execution by overwriting files a pipeline later runs. This issue is fixed in versions 3.12.4 and 4.1.0.
High [CVE-2026-57170] Arbitrary code execution via Server-Side Template Injection
Compliance-trestle (Trestle) is a Python SDK and command-line tool for managing OSCAL compliance documents. In versions prior to 3.12.4 and 4.0.0 through 4.0.3, the custom Jinja2 include tags mdsection_include and md_clean_include re-parse the content of an included Markdown file as Jinja2 template code in a non-sandboxed environment, allowing server-side template injection that can lead to arbitrary code execution. The MDSectionInclude and MDCleanInclude tags in Trestle/core/jinja/tags.py pass included file content to Parser(self.environment,...).parse(), splicing it into the host template's compilation, and the environment is a plain jinja2.Environment rather than a SandboxedEnvironment, so any expressions in the file are evaluated with full access to the usual SSTI gadget chain. Because Trestle's Markdown writers emit OSCAL prose and component-description fields verbatim, applying delimiter neutralization only to parameter tables, attacker-controlled OSCAL data such as a control statement, part prose, or component description containing Jinja2 syntax flows into an included Markdown file and is executed when the include tag re-parses it. This issue is fixed in version 4.1.0. This vulnerability, known as Server-Side Template Injection (SSTI), allows an attacker to embed malicious Jinja2 syntax within OSCAL data.
High [CVE-2026-52776] Server-Side Request Forgery (SSRF) bypass via IPv4-mapped IPv6 and 0.0.0.0
Server-Side Request Forgery (SSRF) bypass via IPv4-mapped IPv6 and 0.0.0.0. Red Hat rates this important (CVSS 8.1). Weakness: CWE-1289. Affected product named by the advisory: File Integrity Operator.
High [CVE-2026-54757] Remote Code Execution via Server-Side Template Injection
Compliance-trestle (Trestle) is a Python SDK and command-line tool for managing OSCAL compliance documents. In versions before 3.12.4 and versions 4.0.0 through 4.0.3, Trestle is vulnerable to server-side template injection that can lead to remote code execution. This occurs because the MDCleanInclude and MDSectionInclude Jinja2 tags re-parse untrusted Markdown content as template source code using a non-sandboxed jinja2.Environment. An attacker who controls content that Trestle renders, such as a crafted workspace Markdown file, a third-party SSP document, or a YAML lookup-table value, can inject a Jinja2 expression that traverses Python object internals to execute arbitrary operating system commands in the context of the Trestle process. This issue is fixed in versions 3.12.4 and 4.1.0. This allows for remote code execution, enabling the attacker to run arbitrary operating system commands within the Trestle process. Red Hat severity: Important — CVSS 7.8 (CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H). Weakness: CWE-917. Affected Red Hat products: File Integrity Operator. Red Hat lists Red Hat Hardened Images as not affected. Red Hat does not currently list a fixing RHSA for this CVE.
High [CVE-2026-16645] Unauthorized access due to missing authorization
Missing Authorization vulnerability in Drupal PhotoSwipe - Responsive JavaScript Modal Image Gallery allows Forceful Browsing. This missing authorization vulnerability allows an attacker to perform forceful browsing, potentially leading to unauthorized access to sensitive information or resources. By exploiting this flaw, an attacker can bypass intended access controls. This Important vulnerability in Drupal PhotoSwipe does not affect Red Hat products as the vulnerable code is not present in the versions shipped with Red Hat offerings. Red Hat severity: Important — CVSS 7.5 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N). Weakness: CWE-425. Red Hat lists Red Hat Developer Hub; Self-service automation portal 2 as not affected.
High [CVE-2026-68763] Denial of Service via HTTP/2 allocation leak
Uncontrolled Resource Consumption vulnerability in Apache Tomcat via an allocation leak in the HTTP/2 backlog tracking when a stream is reset This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.24, from 10.1.0-M1 through 10.1.57, from 9.0.39 through 9.0.120. The following versions were EOL at the time the CVE was created but are known to be affected: from 8.5.59 through 8.5.100. Other unsupported versions may also be affected. Users are recommended to upgrade to version 11.0.25, 10.1.58 or 9.0.121, which fix the issue. A remote attacker could exploit this to cause a Denial of Service (DoS), making the server unresponsive or unavailable to users. This Important flaw in Apache Tomcat, as shipped with Red Hat JBoss Web Server, allows a remote, unauthenticated attacker to cause a denial of service. The vulnerability stems from an allocation leak in the HTTP/2 backlog tracking, which can be triggered by resetting an HTTP/2 stream, leading to resource exhaustion and service unavailability. Red Hat severity: Important — CVSS 7.5 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H). Weakness: CWE-770. Affected products named by the advisory: Red Hat JBoss Web Server 6.2.5; 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 11 more.
High [CVE-2026-68569] Improper Authentication due to principal lookup failure
Improper Authentication vulnerability in Apache Tomcat meant that in some circumstances (e.g. CLIENT-CERT, SPNEGO) that a user would be authenticated even if the user did not exist in the DataSourceRealm. This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.24, from 10.1.0-M1 through 10.1.57, from 9.0.0.M1 through 9.0.120. The following versions were EOL at the time the CVE was created but are known to be affected: from 8.5.0 through 8.5.100, from 7.0.0 through 7.0.109. Other unsupported versions may also be affected. Users are recommended to upgrade to version 11.0.25, 10.1.58 or 9.0.121, which fix the issue. This can lead to unauthorized access to the system. This Important vulnerability in Apache Tomcat allows unauthorized access when configured with CLIENT-CERT or SPNEGO authentication alongside a DataSourceRealm. This flaw could permit a user to be authenticated even if their account does not exist, bypassing intended security controls in Red Hat deployments where these specific configurations are in use. Red Hat severity: Important — CVSS 8.2 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N). Weakness: CWE-305. Affected products named by the advisory: Red Hat JBoss Web Server 6.2.5; 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 11 more.
High [CVE-2026-80186] Stack Overflow in name2utf8 causes DoS and potential code execution
A stack-based buffer overflow vulnerability exists in BlueZ, the Linux Bluetooth protocol stack. A remote user within Bluetooth radio range can send a specially crafted Extended Inquiry Response (EIR) packet that causes a buffer overflow when the target device performs Bluetooth discovery. This vulnerability can lead to a Denial of Service (DoS) by crashing the bluetoothd service and may allow for arbitrary code execution. Red Hat severity: Important — CVSS 7.6 (CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H). Weakness: CWE-120. Affected Red Hat products: Red Hat Enterprise Linux 10; Red Hat Enterprise Linux 7; Red Hat Enterprise Linux 8; Red Hat Enterprise Linux 9. Red Hat does not currently list a fixing RHSA for this CVE. Affected products named by the advisory: Red Hat package: bluez.
High [CVE-2026-65927] Access control bypass due to off-by-one error in RewriteValve [N] flag processing
Off-by-one Error vulnerability in Apache Tomcat impacting the [N] flag on the rewrite valves causes rewrite processing to restart at the second rule rather than the first rule. This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.24, from 10.1.0-M1 through 10.1.57, from 9.0.0.M1 through 9.0.120. The following versions were EOL at the time the CVE was created but are known to be affected: from 8.5.0 through 8.5.100. Other unsupported versions may also be affected. Users are recommended to upgrade to version 11.0.25, 10.1.58 or 9.0.121 which fix the issue. This vulnerability may allow an attacker to bypass intended access controls. This vulnerability can lead to an access control bypass, allowing unauthorized access to resources in applications that utilize the RewriteValve with the [N] flag. Red Hat severity: Important — CVSS 8.2 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N). Weakness: CWE-193. Affected Red Hat products: Red Hat JBoss Web Server 6.2.5; 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; 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; Red Hat JBoss Web Server 7.
High [CVE-2026-65182] Security constraint bypass due to improper access control
Improper Access Control, Incorrect Authorization vulnerability in Apache Tomcat leads to security constraint bypass if a constraint for a longer path is specified before a more restrictive constraint for a shorter sub-path. This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.24, from 10.1.0-M1 through 10.1.57, from 9.0.0.M1 through 9.0.120, from 8.5.0 through 8.5.100, from 7.0.0 through 7.0.109. Users are recommended to upgrade to version 11.0.25, 10.1.58, 9.0.121, which fixes the issue. This Important vulnerability in Apache Tomcat allows for security constraint bypasses, potentially granting unauthorized access to protected web application resources. The flaw occurs when security constraints for longer URL paths are defined before more restrictive constraints for shorter, specific sub-paths within the application's `web.xml` configuration. This misconfiguration can undermine intended access controls in Red Hat deployments of Apache Tomcat. Red Hat severity: Important — CVSS 8.2 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N). Weakness: CWE-551. Affected products named by the advisory: Red Hat JBoss Web Server 6.2.5; 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 11 more.
High [CVE-2026-79203] Improper input validation in DevTools
Improper input validation in DevTools in Google Chrome prior to 152.0.7977.65 allowed a remote attacker who had compromised the renderer process to bypass site isolation via a crafted HTML page. (Chromium security severity: Medium) Upstream bug(s): Red Hat Product Security rates the severity of this flaw as determined by the Google Chrome Security Advisory. Red Hat severity: Important — CVSS 8.7 (CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N). Weakness: CWE-1289.
High [CVE-2026-79013] Improper input validation in Sync
Improper input validation in Sync in Google Chrome prior to 152.0.7977.65 allowed a remote attacker to obtain sensitive information via crafted network traffic. (Chromium security severity: Medium) An improper input validation flaw was found in the Sync component of the Chromium browser. Upstream bug(s): Red Hat Product Security rates the severity of this flaw as determined by the Google Chrome Security Advisory. Red Hat severity: Important — CVSS 7.5 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N). Weakness: CWE-201.
High [CVE-2026-79066] Improper input validation in Navigation
Improper input validation in Navigation in Google Chrome prior to 152.0.7977.65 allowed a remote attacker who had compromised the renderer process to bypass site isolation via a crafted HTML page. (Chromium security severity: Medium) Upstream bug(s): Red Hat Product Security rates the severity of this flaw as determined by the Google Chrome Security Advisory. Red Hat severity: Important — CVSS 7.9 (CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N). Weakness: CWE-1286.
High [CVE-2026-78899] Use after free in V8
Use after free in V8 in Google Chrome prior to 152.0.7977.65 allowed a remote attacker to execute arbitrary code inside the sandbox via a crafted HTML page. (Chromium security severity: High) An use after free flaw was found in the V8 component of the Chromium browser. Upstream bug(s): Red Hat Product Security rates the severity of this flaw as determined by the Google Chrome Security Advisory. Red Hat severity: Important — CVSS 8.8 (CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H). Weakness: CWE-825.
High [CVE-2026-68515] Heap out-of-bounds write in exrmultiview via crafted EXR files
OpenEXR is the reference implementation and specification for the EXR image format, widely used in the motion picture industry. In versions before 3.2.11, 3.3.0 through 3.3.12, and 3.4.0 through 3.4.13, exrmultiview can write past a heap allocation when it combines two attacker-supplied, individually valid scanline EXR files whose union dataWindow is not aligned to one view's channel subsampling. The utility allocates sampled channel storage using a truncated union_width / xSampling, then reads the sampled input through a Slice based on the misaligned union window, producing a heap out-of-bounds write. The trigger is normal public-tool processing, such as exrmultiview left A.exr right B.exr out.exr with crafted but valid inputs, so this is not solely an API or caller-precondition issue. This issue is fixed in versions 3.2.11, 3.3.13, and 3.4.14. A flaw was found in OpenEXR. A remote attacker could exploit this vulnerability by providing specially crafted EXR image files to the exrmultiview utility. When processing these files, the utility can write beyond its allocated memory on the heap, leading to a heap out-of-bounds write. This could allow an attacker to achieve arbitrary code execution or cause a denial of service (DoS) on the affected system. Exploitation requires a local attacker to persuade a user to process specially crafted EXR image files.
High [CVE-2026-79992] local shell command injection through the user field in emacs tramp
A flaw was found in Emacs TRAMP. A local attacker could exploit this vulnerability by processing maliciously crafted filenames. This occurs because TRAMP concatenates login arguments without proper sanitization, which are then passed to a local shell. Successful exploitation could lead to arbitrary code execution. This issue requires user interaction with a malicious file, limiting its remote exploitability. Red Hat severity: Important — CVSS 7.8 (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H). Weakness: CWE-78. Affected Red Hat products: 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. Will not fix / out of support: Red Hat Enterprise Linux 6. Red Hat does not currently list a fixing RHSA for this CVE. Affected products named by the advisory: Red Hat package: emacs.
High [CVE-2026-19913] Information disclosure via improper validation of ServiceUrl parameter
Information disclosure via improper validation of ServiceUrl parameter. Red Hat rates this important (CVSS 7.5). Weakness: CWE-918.
High [CVE-2026-55553] Credential leakage via cross-origin redirects
urllib is an HTTP client for Node.js that supports authentication, redirects, timeouts, and other request features. Prior to 4.9.1 and 2.44.1, urllib follows redirects through followRedirect but reuses caller-supplied options across origins. In src/HttpClient.ts, #requestInternal recursively calls this.#requestInternal(nextUrl.href, options, requestContext), causing options.headers and auth or digestAuth values to be reused when the redirect target has a different scheme, host, or port. Authorization, Cookie, Proxy-Authorization, x-api-key, x-auth-token, and x-access-token can therefore be sent to an attacker-controlled redirected origin, exposing credentials intended for the original origin and potentially allowing reuse against the original partner API or related services. No user interaction is required. This issue is fixed in versions 2.44.1 and 4.9.1. A flaw was found in urllib. This HTTP client for Node.js can be exploited by a remote attacker due to improper handling of cross-origin redirects. When following redirects, urllib reuses sensitive request headers, such as Authorization and Cookie, across different origins. Red Hat severity: Important — CVSS 7.5 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N). Weakness: CWE-201.