Red Hat Linux Security Advisories & CVEs
3200 advisories tracked · Red Hat Security Data API · direct feeds checked every minute; rate-limited backstops use a safe source cadence
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Security advisories for your Red Hat release
Pick your distribution release to see every advisory issued for it and its severity mix. Fixes ship as errata — keep the system patched. This is the release's advisory history, not a per-package scan.
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Red Hat Security Data API
Red Hat Enterprise Linux errata (RHSA) via the official Red Hat Security Data API — CVE severity, CVSS and affected packages. A credential-free official source.
Latest Red Hat advisories
Medium [CVE-2026-58207] Denial of Service via arithmetic overflow in connection monitoring pagination
Denial of Service via arithmetic overflow in connection monitoring pagination. Red Hat rates this moderate (CVSS 6.5). Weakness: CWE-190.
Medium [CVE-2026-58252] Information disclosure via access control bypass in wildcard and queue subscriptions
Information disclosure via access control bypass in wildcard and queue subscriptions. Red Hat rates this moderate (CVSS 6.5). Weakness: CWE-551.
Medium [CVE-2026-58251] Information disclosure due to bypass of subject deny rules via queue subscriptions
Information disclosure due to bypass of subject deny rules via queue subscriptions. Red Hat rates this moderate (CVSS 6.5). Weakness: CWE-551.
Medium [CVE-2026-59936] Denial of Service via crafted PDF inline image
Denial of Service via crafted PDF inline image. Red Hat rates this moderate (CVSS 6.5). Weakness: CWE-835.
Medium [CVE-2026-59935] Denial of Service via crafted PDF with unterminated inline image
Denial of Service via crafted PDF with unterminated inline image. Red Hat rates this moderate (CVSS 6.5). Weakness: CWE-606.
Medium [CVE-2026-59819] Information disclosure via local file read in test connection endpoint
Information disclosure via local file read in test connection endpoint. Red Hat rates this moderate (CVSS 4.9). Weakness: CWE-22.
Medium [CVE-2026-44512] Denial of Service via crafted untrusted models
Denial of Service via crafted untrusted models. Red Hat rates this moderate (CVSS 6.5). Weakness: CWE-476.
Medium [CVE-2026-15154] Unauthenticated Regular-Expression Denial of Service (ReDoS) via detector_params.regex
Unauthenticated Regular-Expression Denial of Service (ReDoS) via detector_params.regex. Red Hat rates this moderate (CVSS 6.5). Weakness: CWE-1333.
Medium [CVE-2026-59937] Denial of Service via crafted PDF with malformed cross-reference streams
Denial of Service via crafted PDF with malformed cross-reference streams. Red Hat rates this moderate (CVSS 6.5). Weakness: CWE-1050.
Medium [CVE-2026-59938] Possible large memory usage for wrong image dimensions
Possible large memory usage for wrong image dimensions. Red Hat rates this moderate (CVSS 5.3). Weakness: CWE-770.
Medium [CVE-2026-59927] Denial of Service via unbounded recursion in Markdown include directive
Denial of Service via unbounded recursion in Markdown include directive. Red Hat rates this moderate (CVSS 5.3). Weakness: CWE-835.
Medium [CVE-2026-59928] Denial of Service via crafted Markdown document with reference-link definitions
Denial of Service via crafted Markdown document with reference-link definitions. Red Hat rates this moderate (CVSS 6.5). Weakness: CWE-606.
Medium [CVE-2026-59924] Information disclosure via crafted include paths
Mistune is a Python Markdown parser with renderers and plugins. Prior to 3.3.0, Include.parse() joins and normalizes user-supplied include paths without verifying that the result remains within the intended markdown directory, allowing crafted include paths to access files outside that directory when markdown files are processed using md.read(). This issue is fixed in version 3.3.0. This can lead to information disclosure when markdown files are processed. This Moderate impact flaw in Mistune, a Python Markdown parser, allows for information disclosure. When processing specially crafted markdown files, an attacker can exploit improper path verification in the `Include.parse()` function to access files outside the intended markdown directory. Red Hat severity: Moderate — CVSS 5.9 (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N). Weakness: CWE-22. Affected Red Hat products: Migration Toolkit for Applications 8; Red Hat OpenShift AI (RHOAI); Red Hat OpenShift Container Platform 4. Red Hat does not currently list a fixing RHSA for this CVE.
Medium [CVE-2026-59929] Cross-site scripting via incomplete URL scheme filtering
Cross-site scripting via incomplete URL scheme filtering. Red Hat rates this moderate (CVSS 6.1). Weakness: CWE-79.
Medium [CVE-2025-3110] HTTP request smuggling via bare line-feed sequences in HTTP headers
HTTP request smuggling via bare line-feed sequences in HTTP headers. Red Hat rates this moderate (CVSS 5.3). Weakness: CWE-444.
Medium [CVE-2026-59925] Denial of Service via crafted Markdown input
Denial of Service via crafted Markdown input. Red Hat rates this moderate (CVSS 6.5). Weakness: CWE-1333.
Medium [CVE-2026-59926] Cross-Site Scripting via unescaped HTML class attribute in Admonition directive
Cross-Site Scripting via unescaped HTML class attribute in Admonition directive. Red Hat rates this moderate (CVSS 5.4). Weakness: CWE-79.
Medium [CVE-2026-59923] Arbitrary code execution through crafted Markdown links
Arbitrary code execution through crafted Markdown links. Red Hat rates this moderate (CVSS 6.1). Weakness: CWE-79.
Medium [CVE-2026-59930] Same-page navigation redirection due to predictable heading IDs
Same-page navigation redirection due to predictable heading IDs. Red Hat rates this moderate (CVSS 4.3). Weakness: CWE-79.
Medium [CVE-2026-59922] Denial of Service via crafted input
Mistune is a Python Markdown parser with renderers and plugins. Prior to 3.3.0, a run of closed tilde, equals-sign, or caret marker pairs around a character causes quadratic work in src/mistune/plugins/formatting.py when the strikethrough, mark, or insert plugin scans for matching markers from each possible start position, allowing denial of service through CPU exhaustion. This issue is fixed in version 3.3.0. A remote attacker could exploit this vulnerability by providing specially crafted input containing specific marker pairs (tilde, equals-sign, or caret). This crafted input causes the parser to perform quadratic work, leading to excessive CPU consumption. This can result in a denial of service (DoS) for the affected system. This Moderate flaw in the Mistune Python Markdown parser can lead to a denial of service. This vulnerability primarily affects Red Hat products where the strikethrough, mark, or insert plugins are explicitly enabled, as these are not part of Mistune's default configuration. Red Hat severity: Moderate — CVSS 6.5 (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H). Weakness: CWE-1333. Affected Red Hat products: Migration Toolkit for Applications 8; Red Hat OpenShift AI (RHOAI); Red Hat OpenShift Container Platform 4. Red Hat does not currently list a fixing RHSA for this CVE.