Red Hat Linux Security Advisories & Vulnerabilities
16004 advisories tracked · Red Hat Security Data API · direct feeds checked every minute; rate-limited sources checked less often
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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, so keep the system patched. This is the release's advisory history, not a per-package scan.
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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
High [CVE-2026-12022] Race Safe Browsing
Race Safe Browsing. Red Hat rates this important (CVSS 8.3). Weakness: CWE-367. 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.
High [CVE-2026-12019] Out of bounds write Codecs
Out of bounds write Codecs. Red Hat rates this important (CVSS 8.3). Weakness: CWE-120. 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.
High [CVE-2026-12020] Use after free Autofill
Use after free Autofill. Red Hat rates this important (CVSS 8.8). Weakness: CWE-825. 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.
High [CVE-2026-12016] Insufficient validation of untrusted input DevTools
Insufficient validation of untrusted input DevTools. Red Hat rates this important (CVSS 8.3). Weakness: CWE-501. 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.
High [CVE-2026-12017] Insufficient validation of untrusted input Extensions
Insufficient validation of untrusted input Extensions. Red Hat rates this important (CVSS 8). Weakness: CWE-653. 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.
High [CVE-2026-12018] Inappropriate implementation Mojo
Inappropriate implementation Mojo. Red Hat rates this important (CVSS 8.8). Weakness: CWE-648. 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.
High [CVE-2026-12014] Use after free Cast
Use after free Cast. Red Hat rates this important (CVSS 8.3). Weakness: CWE-825. 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.
High [CVE-2026-12011] Use after free WebMIDI
Use after free WebMIDI. Red Hat rates this important (CVSS 8.3). Weakness: CWE-825. 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.
High [CVE-2026-12012] Use after free Network
Use after free Network. Red Hat rates this important (CVSS 8.1). Weakness: CWE-825. 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.
High [CVE-2026-12009] Insufficient validation of untrusted input Accessibility
Insufficient validation of untrusted input Accessibility. Red Hat rates this important (CVSS 8.3). Weakness: CWE-1286. 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.
High [CVE-2026-12007] CVE-2026-12007
CVE-2026-12007. Red Hat rates this important (CVSS 8.8). Weakness: CWE-825. 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.
High [CVE-2026-12008] Use after free DigitalCredentials
Use after free DigitalCredentials. Red Hat rates this important (CVSS 8.3). Weakness: CWE-772. 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.
High [CVE-2026-44249] IPv6 subnet rule bypass due to incorrect masking operation
IPv6 subnet rule bypass due to incorrect masking operation. Red Hat rates this important (CVSS 8.1). Weakness: CWE-1287. Affected package(s): netty-handler, offline-knowledge-portal/rhokp-rhel9:1782239370. Resolved in Red Hat advisory RHSA-2026:26586 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Offline Knowledge Portal 1.2.7; Red Hat OpenShift Dev Spaces 3.29; OpenShift Serverless; Red Hat AMQ Broker 7; and 27 more.
High [CVE-2026-52860] Arbitrary code execution through Python omni-completion.
Arbitrary code execution through Python omni-completion.. Red Hat rates this important (CVSS 8). Weakness: CWE-94. No fix erratum has been published yet; monitor the Red Hat CVE page and apply the RHSA when released. Affected products named by the advisory: Red Hat Enterprise Linux.
High [CVE-2026-47162] Arbitrary Code Execution via crafted directory names
Arbitrary Code Execution via crafted directory names. Red Hat rates this important (CVSS 7.3). Weakness: CWE-140. No fix erratum has been published yet; monitor the Red Hat CVE page and apply the RHSA when released. Affected products named by the advisory: Red Hat Enterprise Linux 6; Red Hat Enterprise Linux 8; Red Hat Enterprise Linux 9; Red Hat Insights proxy 1.5; and 5 more.
High [CVE-2026-44486] Information disclosure of proxy credentials via HTTP redirects
Information disclosure of proxy credentials via HTTP redirects. Red Hat rates this important (CVSS 7.5). Weakness: CWE-201. Affected package(s): openshift-service-mesh/kiali-ossmc-rhel9:1782201851, openshift-service-mesh/kiali-ossmc-rhel9:1782231869, openshift4/ose-console-rhel9:1782244020, advanced-cluster-security/rhacs-main-rhel8:1779293013, discovery/discovery-ui-rhel9:1782166952, openshift4/ose-monitoring-plugin-rhel9:1781731914. Resolved in Red Hat advisory RHSA-2026:26234 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Advanced Cluster Management for Kubernetes 2.13; Red Hat Advanced Cluster Management for Kubernetes 2.14; Red Hat Advanced Cluster Security for Kubernetes 4.10; Red Hat Advanced Cluster Security for Kubernetes 4.9; and 45 more.
High [CVE-2026-44487] Information disclosure of proxy credentials via redirect flows
Information disclosure of proxy credentials via redirect flows. Red Hat rates this important (CVSS 7.5). Weakness: CWE-201. Affected package(s): openshift-service-mesh/kiali-ossmc-rhel9:1782201851, openshift-service-mesh/kiali-ossmc-rhel9:1782231869, openshift4/ose-console-rhel9:1782244020, satellite/iop-advisor-frontend-rhel9:1782243376, openshift4/ose-monitoring-plugin-rhel9:1782171032, satellite/iop-host-inventory-frontend-rhel9:1782253070. Resolved in Red Hat advisory RHSA-2026:29864 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Advanced Cluster Management for Kubernetes 2.13; Red Hat Advanced Cluster Management for Kubernetes 2.14; Red Hat Advanced Cluster Security for Kubernetes 4.10; Red Hat Advanced Cluster Security for Kubernetes 4.9; and 47 more.
High [CVE-2026-44488] Denial of Service due to unenforced request and response size limits
Denial of Service due to unenforced request and response size limits. Red Hat rates this important (CVSS 7.5). Weakness: CWE-770. Affected package(s): openshift-service-mesh/kiali-ossmc-rhel9:1782201851, openshift-service-mesh/kiali-ossmc-rhel9:1782231869, openshift4/ose-console-rhel9:1782244020, satellite/iop-advisor-frontend-rhel9:1782243376, satellite/iop-host-inventory-frontend-rhel9:1782253070, openshift-service-mesh/kiali-ossmc-rhel9:1782201894. Resolved in Red Hat advisory RHSA-2026:26234 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Ansible Automation Platform 2.6 for RHEL 9; Red Hat Advanced Cluster Management for Kubernetes 2.13; Red Hat Advanced Cluster Management for Kubernetes 2.14; Red Hat Advanced Cluster Security for Kubernetes 4.10; and 47 more.
High [CVE-2026-44496] Client-side Denial of Service via unescaped regex metacharacters in XSRF cookie name
Client-side Denial of Service via unescaped regex metacharacters in XSRF cookie name. Red Hat rates this important (CVSS 7.5). Weakness: CWE-1333. Affected package(s): openshift-service-mesh/kiali-ossmc-rhel9:1782201851, openshift-service-mesh/kiali-ossmc-rhel9:1782231869, openshift4/ose-console-rhel9:1782244020, quay/quay-rhel8:1782487717, quay/quay-rhel8:1781878070, advanced-cluster-security/rhacs-main-rhel8:1779293013. Resolved in Red Hat advisory RHSA-2026:26234 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Advanced Cluster Management for Kubernetes 2.13; Red Hat Advanced Cluster Management for Kubernetes 2.14; Red Hat Advanced Cluster Security for Kubernetes 4.10; Red Hat Advanced Cluster Security for Kubernetes 4.9; and 44 more.
High [CVE-2026-44495] Information disclosure due to prototype pollution vulnerability
Information disclosure due to prototype pollution vulnerability. Red Hat rates this important (CVSS 7). Weakness: CWE-915. Affected package(s): openshift-service-mesh/kiali-ossmc-rhel9:1782201851, openshift-service-mesh/kiali-ossmc-rhel9:1782231869, openshift4/ose-console-rhel9:1782244020, advanced-cluster-security/rhacs-main-rhel8:1779293013, discovery/discovery-ui-rhel9:1782166952, openshift4/ose-monitoring-plugin-rhel9:1781731914. Resolved in Red Hat advisory RHSA-2026:26234 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Ansible Automation Platform 2.6 for RHEL 9; Red Hat Advanced Cluster Management for Kubernetes 2.13; Red Hat Advanced Cluster Management for Kubernetes 2.14; Red Hat Advanced Cluster Security for Kubernetes 4.10; and 51 more.
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