Red Hat Linux Security Advisories & Vulnerabilities
16039 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
Critical [CVE-2026-5866] Use after free in Media
Use after free in Media. Red Hat rates this important (CVSS 9.6). 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.
Critical [CVE-2026-5872] Use after free in Blink
Use after free in Blink. Red Hat rates this important (CVSS 9.6). 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.
Critical [CVE-2026-5863] Inappropriate implementation in V8
Inappropriate implementation in V8. Red Hat rates this important (CVSS 9.6). Weakness: CWE-641. 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.
Critical [CVE-2026-5870] Integer overflow in Skia
Integer overflow in Skia. Red Hat rates this important (CVSS 9.6). Weakness: CWE-190. 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.
Critical [CVE-2026-5873] Out of bounds read and write in V8
Out of bounds read and write in V8. Red Hat rates this important (CVSS 9.6). 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.
Critical [CVE-2026-5859] Integer overflow in WebML
Integer overflow in WebML. Red Hat rates this important (CVSS 9.6). Weakness: CWE-190. 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-2026-28390] Denial of Service due to NULL pointer dereference in CMS EnvelopedData processing
Denial of Service due to NULL pointer dereference in CMS EnvelopedData processing. Red Hat rates this moderate (CVSS 7.5). Weakness: CWE-476. Affected package(s): openssl-main, rhui5/installer-rhel9:1781525693, openssl, compat-openssl10, rhui5/cds-rhel9:1781525684, discovery/discovery-ui-rhel9:1782166952. Resolved in Red Hat advisory RHSA-2026:35869 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux 1; Red Hat Enterprise Linux 8; Red Hat Enterprise Linux 9.
High [CVE-2026-34045] Denial of Service and Information Disclosure via unauthenticated HTTP server
Denial of Service and Information Disclosure via unauthenticated HTTP server. Red Hat rates this important (CVSS 8.2). Weakness: CWE-770. Affected package(s): rh-podman-desktop. Resolved in Red Hat advisory RHSA-2026:13867 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux 10; Red Hat Build of Podman Desktop - Tech Preview.
High [CVE-2026-29181] github.com/open-telemetry/opentelemetry-go: OpenTelemetry-Go: Denial of Service via crafted multi-value baggage headers
github.com/open-telemetry/opentelemetry-go: OpenTelemetry-Go: Denial of Service via crafted multi-value baggage headers. Red Hat rates this important (CVSS 7.5). Weakness: CWE-770. Affected package(s): multicluster-engine/hypershift-addon-rhel9-operator:1780917881. Resolved in Red Hat advisory RHSA-2026:25271 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Advanced Cluster Management for Kubernetes 2; cert-manager Operator for Red Hat OpenShift; Cert Manager support for Red Hat OpenShift release 1.19; Logging Subsystem for Red Hat OpenShift 6.6.
High [CVE-2026-39373] Memory exhaustion via crafted compressed JWE tokens
Memory exhaustion via crafted compressed JWE tokens. Red Hat rates this low (CVSS 7.5). Weakness: CWE-770. Affected package(s): python3.12-jwcrypto, python-jwcrypto. Resolved in Red Hat advisory RHSA-2026:13508 — 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 1.
High [CVE-2026-39364] Information disclosure via query parameter manipulation on the development server
Information disclosure via query parameter manipulation on the development server. Red Hat rates this important (CVSS 7.5). Weakness: CWE-472. Affected package(s): ansible-automation-platform-tech-preview/mcp-server-rhel9:1779783248. Resolved in Red Hat advisory RHSA-2026:24866 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Ansible Automation Platform 2.6; Red Hat Build of Keycloak; Red Hat Build of Podman Desktop - Tech Preview; Red Hat OpenShift Container Platform 4; and 1 more.
High [CVE-2026-39363] Information disclosure via WebSocket connection bypasses access control
Information disclosure via WebSocket connection bypasses access control. Red Hat rates this important (CVSS 7.5). Weakness: CWE-1220. Affected package(s): ansible-automation-platform-tech-preview/mcp-server-rhel9:1779783248, automation-platform-ui, automation-gateway. Resolved in Red Hat advisory RHSA-2026:24866 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Ansible Automation Platform 2.5 for RHEL 8; Red Hat Ansible Automation Platform 2.5 for RHEL 9; Red Hat Ansible Automation Platform 2.6 for RHEL 9; Red Hat Build of Keycloak; and 4 more.
High [CVE-2026-33816] Memory-safety vulnerability
Memory-safety vulnerability. Red Hat rates this important (CVSS 8.3). Weakness: CWE-787. Affected package(s): advanced-cluster-security/rhacs-scanner-v4-rhel8:1777986630, rhtas/updatetree-rhel9:1780053572, rhtas/createtree-rhel9:1780053572, advanced-cluster-security/rhacs-scanner-v4-rhel8:1777307791, custom-metrics-autoscaler/custom-metrics-autoscaler-rhel9-operator:1779953535, go-fdo-server. Resolved in Red Hat advisory RHSA-2026:13907 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Cryostat 4 on RHEL 9; Red Hat Enterprise Linux 10; RHEM 1.0 for RHEL 9; Red Hat Advanced Cluster Management for Kubernetes 2.15; and 16 more.
High [CVE-2026-33815] Memory-safety vulnerability
Memory-safety vulnerability. Red Hat rates this important (CVSS 8.3). Weakness: CWE-787. Affected package(s): advanced-cluster-security/rhacs-scanner-v4-rhel8:1777986630, rhtas/updatetree-rhel9:1780053572, rhtas/createtree-rhel9:1780053572, advanced-cluster-security/rhacs-scanner-v4-rhel8:1777307791, custom-metrics-autoscaler/custom-metrics-autoscaler-rhel9-operator:1779953535, rhtas/trillian-logserver-rhel9:1780053572. Resolved in Red Hat advisory RHSA-2026:24482 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Cryostat 4 on RHEL 9; RHEM 1.0 for RHEL 9; Red Hat Advanced Cluster Management for Kubernetes 2.15; Red Hat Advanced Cluster Security for Kubernetes 4.10; and 17 more.
High [CVE-2026-4740] Open Cluster Management (OCM): Cross-cluster privilege escalation via improper Kubernetes client certificate renewal validation
Open Cluster Management (OCM): Cross-cluster privilege escalation via improper Kubernetes client certificate renewal validation. Red Hat rates this important (CVSS 8.2). Weakness: CWE-295. 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-2026-20911] Arbitrary Code Execution via specially crafted file
Arbitrary Code Execution via specially crafted file. Red Hat rates this important (CVSS 7.5). Weakness: CWE-120. 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 7; Red Hat Enterprise Linux 8.
High [CVE-2026-21413] Arbitrary code execution via heap-based buffer overflow in lossless JPEG loading
Arbitrary code execution via heap-based buffer overflow in lossless JPEG loading. Red Hat rates this important (CVSS 7.5). Weakness: CWE-787. Affected package(s): LibRaw. Resolved in Red Hat advisory RHSA-2026:11360 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support; Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On; Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support; Red Hat Enterprise Linux 8.6 Telecommunications Update Service; and 8 more.
High [CVE-2026-20889] Arbitrary code execution via specially crafted image file
Arbitrary code execution via specially crafted image file. Red Hat rates this important (CVSS 7.5). Weakness: CWE-120. Affected package(s): LibRaw. Resolved in Red Hat advisory RHSA-2026:13284 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support; Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On; Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support; Red Hat Enterprise Linux 8.6 Telecommunications Update Service; and 3 more.
High [CVE-2026-24660] Memory Corruption via Malicious File Processing
Memory Corruption via Malicious File Processing. Red Hat rates this important (CVSS 7.5). Weakness: CWE-120. Affected package(s): LibRaw. Resolved in Red Hat advisory RHSA-2026:13284 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support; Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On; Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support; Red Hat Enterprise Linux 8.6 Telecommunications Update Service; and 4 more.
High [CVE-2026-24450] Arbitrary code execution via a specially crafted malicious file
Arbitrary code execution via a specially crafted malicious file. Red Hat rates this moderate (CVSS 7.5). Weakness: CWE-190. Affected package(s): LibRaw. Resolved in Red Hat advisory RHSA-2026:11360 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux 9.
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