Red Hat Linux Security Advisories & CVEs
6249 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-2026-4707] Incorrect boundary conditions in the Graphics: Canvas2D component
Incorrect boundary conditions in the Graphics: Canvas2D component. Red Hat rates this moderate (CVSS 6.1). Weakness: CWE-823. Affected package(s): firefox, thunderbird. Resolved in Red Hat advisory RHSA-2026:6917 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux 8; Red Hat Enterprise Linux 9; Red Hat Enterprise Linux 7; Red Hat Enterprise Linux 1.
Medium [CVE-2026-4705] Undefined behavior in the WebRTC: Signaling component
Undefined behavior in the WebRTC: Signaling component. Red Hat rates this moderate (CVSS 6.5). Weakness: CWE-475. Affected package(s): firefox, thunderbird. Resolved in Red Hat advisory RHSA-2026:6917 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux 8; Red Hat Enterprise Linux 9; Red Hat Enterprise Linux 7; Red Hat Enterprise Linux 1.
Medium [CVE-2026-4702] JIT miscompilation in the JavaScript Engine component
JIT miscompilation in the JavaScript Engine component. Red Hat rates this moderate (CVSS 6.1). Weakness: CWE-733. Affected package(s): firefox, thunderbird. Resolved in Red Hat advisory RHSA-2026:6917 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux 8; Red Hat Enterprise Linux 9; Red Hat Enterprise Linux 7; Red Hat Enterprise Linux 1.
Medium [CVE-2026-4701] Use-after-free in the JavaScript Engine component
Use-after-free in the JavaScript Engine component. Red Hat rates this moderate (CVSS 6.1). Weakness: CWE-825. Affected package(s): firefox, thunderbird. Resolved in Red Hat advisory RHSA-2026:6917 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux 8; Red Hat Enterprise Linux 9; Red Hat Enterprise Linux 7; Red Hat Enterprise Linux 1.
Medium [CVE-2026-32642] Apache Artemis and Apache ActiveMQ Artemis: Unauthorized address creation due to incorrect authorization during JMS topic subscription.
Apache Artemis and Apache ActiveMQ Artemis: Unauthorized address creation due to incorrect authorization during JMS topic subscription.. Red Hat rates this moderate (CVSS 4.3). Affected package(s): artemis-server. Resolved in Red Hat advisory RHSA-2026:8509 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux.
Medium [CVE-2026-33176] Denial of Service via large scientific notation strings
Denial of Service via large scientific notation strings. Red Hat rates this moderate (CVSS 6.5). Weakness: CWE-770. Affected package(s): rubygem-activesupport. Resolved in Red Hat advisory RHSA-2026:14835 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux 8; Red Hat Enterprise Linux 9.
Medium [CVE-2026-26209] Denial of Service due to uncontrolled recursion via crafted CBOR payloads
Denial of Service due to uncontrolled recursion via crafted CBOR payloads. Red Hat rates this moderate (CVSS 5.5). Weakness: CWE-770. Affected package(s): rhaiis/vllm-rocm-rhel9:1779223651, rhaiis/vllm-rocm-rhel9:1778244531, rhaiis/vllm-cuda-rhel9:1779223654, rhaiis/vllm-cuda-rhel9:1778274666, rhaiis/vllm-spyre-rhel9:1778244546. Resolved in Red Hat advisory RHSA-2026:19724 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux.
Medium [CVE-2026-4647] Out-of-Bounds Read in XCOFF Relocation Processing in GNU Binutils BFD Library
Out-of-Bounds Read in XCOFF Relocation Processing in GNU Binutils BFD Library. Red Hat rates this moderate (CVSS 6.1). Weakness: CWE-125. Affected package(s): binutils-main. Resolved in Red Hat advisory RHSA-2026:33527 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Hardened Images; Red Hat Enterprise Linux 10; Red Hat Enterprise Linux 6; Red Hat Enterprise Linux 7; and 3 more.
Medium [CVE-2026-4674] Out of bounds read in CSS
Out of bounds read in CSS. Red Hat rates this important (CVSS 6.5). Weakness: CWE-125. No fix erratum has been published yet; monitor the Red Hat CVE page and apply the RHSA when released. Affected product named by the advisory: Red Hat Enterprise Linux.
Medium [CVE-2026-4675] Heap buffer overflow in WebGL
Heap buffer overflow in WebGL. Red Hat rates this important (CVSS 6.5). Weakness: CWE-787. No fix erratum has been published yet; monitor the Red Hat CVE page and apply the RHSA when released. Affected product named by the advisory: Red Hat Enterprise Linux.
Medium [CVE-2026-4677] Out of bounds read in WebAudio
Out of bounds read in WebAudio. Red Hat rates this important (CVSS 6.5). Weakness: CWE-125. No fix erratum has been published yet; monitor the Red Hat CVE page and apply the RHSA when released. Affected product named by the advisory: Red Hat Enterprise Linux.
Medium [CVE-2026-4438] Invalid DNS hostname returned via gethostbyaddr functions
Invalid DNS hostname returned via gethostbyaddr functions. Red Hat rates this low (CVSS 4). Weakness: CWE-838. Affected package(s): glibc-main, rhui5/haproxy-rhel9:1781525671, insights-proxy/insights-proxy-container-rhel9:1780420428, glibc, rhui5/installer-rhel9:1781525693, costmanagement/costmanagement-metrics-rhel9-operator:1780946239. Resolved in Red Hat advisory RHSA-2026:19061 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux 9; Red Hat Enterprise Linux 1.
Medium [CVE-2026-4437] Incorrect DNS response parsing via crafted DNS server response
Incorrect DNS response parsing via crafted DNS server response. Red Hat rates this moderate (CVSS 6.5). Weakness: CWE-1286. Affected package(s): glibc-main, rhui5/haproxy-rhel9:1781525671, insights-proxy/insights-proxy-container-rhel9:1780420428, glibc, rhui5/installer-rhel9:1781525693, costmanagement/costmanagement-metrics-rhel9-operator:1780946239. Resolved in Red Hat advisory RHSA-2026:19061 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux 9; Red Hat Enterprise Linux 1.
Medium [CVE-2026-33022] Denial of Service via long resolver names
Denial of Service via long resolver names. Red Hat rates this moderate (CVSS 6.5). Weakness: CWE-130. Affected package(s): openshift-pipelines/pipelines-controller-rhel9:1775707731, openshift-pipelines/pipelines-operator-bundle:1776925111, openshift-pipelines/pipelines-operator-bundle:1774871390, openshift-pipelines/pipelines-controller-rhel9:1774556221. Resolved in Red Hat advisory RHSA-2026:6170 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux.
Medium [CVE-2006-10002] XML::Parser for Perl: Heap corruption and denial of service from crafted XML input
XML::Parser for Perl: Heap corruption and denial of service from crafted XML input. Red Hat rates this moderate (CVSS 6.5). Weakness: CWE-131. Affected package(s): perl-XML-Parser. Resolved in Red Hat advisory RHSA-2026:8608 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux 8; Red Hat Enterprise Linux 1; Red Hat Enterprise Linux 9; Red Hat Enterprise Linux 7.
Medium [CVE-2026-4426] Denial of Service via malformed ISO file processing
Denial of Service via malformed ISO file processing. Red Hat rates this moderate (CVSS 6.5). Weakness: CWE-1335. Affected package(s): libarchive-main. Resolved in Red Hat advisory RHSA-2026:8944 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Hardened Images; Red Hat Enterprise Linux 10; Red Hat Enterprise Linux 7; Red Hat Enterprise Linux 8; and 2 more.
Medium [CVE-2026-27980] Unbounded next/image disk cache growth can exhaust storage
Unbounded next/image disk cache growth can exhaust storage. Red Hat rates this moderate (CVSS 5.3). Weakness: CWE-770. Affected package(s): com.github.streamshub-console. Resolved in Red Hat advisory RHSA-2026:13571 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux.
Medium [CVE-2026-4366] Blind Server-Side Request Forgery (SSRF) via HTTP Redirect Handling in Keycloak
Blind Server-Side Request Forgery (SSRF) via HTTP Redirect Handling in Keycloak. Red Hat rates this moderate (CVSS 5.8). Weakness: CWE-918. Affected package(s): rhbk/keycloak-operator-bundle:26.4.12, rhbk/keycloak-rhel9:26.4, rhbk/keycloak-rhel9-operator:26.4. Resolved in Red Hat advisory RHSA-2026:19596 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux.
Medium [CVE-2025-46299] Processing maliciously crafted web content may disclose internal states of the app
Processing maliciously crafted web content may disclose internal states of the app. Red Hat rates this moderate (CVSS 6.5). Weakness: CWE-909. Affected package(s): webkit2gtk3, webkitgtk4. Resolved in Red Hat advisory RHSA-2026:19206 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux 8; Red Hat Enterprise Linux 9; Red Hat Enterprise Linux 7.
Medium [CVE-2026-20676] A website may be able to track users through Safari web extensions
A website may be able to track users through Safari web extensions. Red Hat rates this moderate (CVSS 4.3). Weakness: CWE-201. Affected package(s): webkit2gtk3, webkitgtk4. Resolved in Red Hat advisory RHSA-2026:19206 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux 8; Red Hat Enterprise Linux 9; Red Hat Enterprise Linux 7.