Red Hat Linux Security Advisories & CVEs
4894 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
High [CVE-2026-29089] Arbitrary code execution via malicious functions in user-writable schemas during extension upgrade
Arbitrary code execution via malicious functions in user-writable schemas during extension upgrade. Red Hat rates this important (CVSS 8.8). Weakness: CWE-427. 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-2026-26017] DNS access control bypass due to plugin execution order flaw
DNS access control bypass due to plugin execution order flaw. Red Hat rates this important (CVSS 7.7). Weakness: CWE-367. Affected package(s): rhacm2/lighthouse-coredns-rhel9:1774086225, rhacm2/lighthouse-agent-rhel9:1780204232, rhacm2/lighthouse-coredns-rhel9:1780204249. Resolved in Red Hat advisory RHSA-2026:8151 — 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 Management for Kubernetes 2.15; Red Hat Connectivity Link 1.
High [CVE-2026-26018] Denial of Service vulnerability due to predictable pseudo-random number generation
Denial of Service vulnerability due to predictable pseudo-random number generation. Red Hat rates this important (CVSS 7.5). Weakness: CWE-1241. Affected package(s): rhacm2/lighthouse-coredns-rhel9:1774086225, rhacm2/lighthouse-agent-rhel9:1780204232, rhacm2/lighthouse-coredns-rhel9:1780204249. Resolved in Red Hat advisory RHSA-2026:8151 — 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 Management for Kubernetes 2.15; Red Hat Connectivity Link 1.
High [CVE-2026-29074] Denial of Service via XML entity expansion
Denial of Service via XML entity expansion. Red Hat rates this important (CVSS 7.5). Weakness: CWE-776. Affected package(s): openshift-service-mesh/kiali-rhel9:1776149682, openshift-service-mesh/kiali-ossmc-rhel9:1776151134, rhoai/odh-mod-arch-model-registry-rhel9:1780467147, rhoai/odh-dashboard-rhel8:1774282136, rhoai/odh-mod-arch-gen-ai-rhel9:1778473763, automation-gateway. Resolved in Red Hat advisory RHSA-2026:13826 — 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 Advanced Cluster Security for Kubernetes 4.8; and 28 more.
High [CVE-2026-29062] Denial of Service via excessive JSON nesting
Denial of Service via excessive JSON nesting. Red Hat rates this important (CVSS 7.5). Weakness: CWE-1284. 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-2026-28799] Denial of Service via heap use-after-free in event subscription
Denial of Service via heap use-after-free in event subscription. Red Hat rates this important (CVSS 7.5). 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-2026-29054] Information disclosure due to case-insensitive Connection header processing
Information disclosure due to case-insensitive Connection header processing. Red Hat rates this important (CVSS 7.5). Weakness: CWE-178. Affected package(s): devspaces/traefik-rhel9:1776718585. Resolved in Red Hat advisory RHSA-2026:10175 — update the affected packages (`sudo dnf update`). Affected product named by the advisory: Red Hat OpenShift Dev Spaces 3.27.
High [CVE-2026-26999] Denial of Service due to incomplete TLS handshake
Denial of Service due to incomplete TLS handshake. Red Hat rates this important (CVSS 7.5). Weakness: CWE-772. Affected package(s): devspaces/traefik-rhel9:1776718585. Resolved in Red Hat advisory RHSA-2026:10175 — update the affected packages (`sudo dnf update`). Affected product named by the advisory: Red Hat OpenShift Dev Spaces 3.27.
High [CVE-2026-25048] Denial of Service via multi-level nested syntax
Denial of Service via multi-level nested syntax. Red Hat rates this important (CVSS 7.5). Weakness: CWE-674. Affected package(s): rhaiis/vllm-cuda-rhel9:1774351144, rhaiis/model-opt-cuda-rhel9:1774547384, rhaiis/vllm-rocm-rhel9:1775252598, rhoai/odh-vllm-gaudi-rhel9:1780069069. Resolved in Red Hat advisory RHSA-2026:24977 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat AI Inference Server 3.2; Red Hat OpenShift AI 2.25; Red Hat Enterprise Linux AI (RHEL AI) 3; Red Hat OpenShift AI (RHOAI).
High [CVE-2026-2092] Unauthorized access via improper validation of encrypted SAML assertions
Unauthorized access via improper validation of encrypted SAML assertions. Red Hat rates this important (CVSS 7.7). Weakness: CWE-1287. Affected package(s): rhbk/keycloak-rhel9-operator:26.2, rhbk/keycloak-rhel9, rhbk/keycloak-operator-bundle:26.2.14, rhbk/keycloak-operator-bundle:26.4.10, rhbk/keycloak-rhel9:26.2, rhbk/keycloak-rhel9-operator:26.4. Resolved in Red Hat advisory RHSA-2026:3925 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat build of Keycloak 26.2; Red Hat build of Keycloak 26.4; RHEL-8 based Middleware Containers; Red Hat Single Sign-On 7.6 for RHEL 8; and 2 more.
High [CVE-2026-3047] Keycloak SAML broker: Authentication bypass due to disabled SAML client completing IdP-initiated login
Keycloak SAML broker: Authentication bypass due to disabled SAML client completing IdP-initiated login. Red Hat rates this important (CVSS 8.8). Weakness: CWE-305. Affected package(s): rhbk/keycloak-rhel9-operator:26.2, rhbk/keycloak-rhel9, rhbk/keycloak-operator-bundle:26.2.14, rhbk/keycloak-operator-bundle:26.4.10, rhbk/keycloak-rhel9:26.2, rhbk/keycloak-rhel9-operator:26.4. Resolved in Red Hat advisory RHSA-2026:3925 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat build of Keycloak 26.2; Red Hat build of Keycloak 26.4.
High [CVE-2026-2603] Unauthorized authentication via disabled SAML Identity Provider
Unauthorized authentication via disabled SAML Identity Provider. Red Hat rates this important (CVSS 8.1). Weakness: CWE-306. Affected package(s): rhbk/keycloak-rhel9-operator:26.2, rhbk/keycloak-rhel9, rhbk/keycloak-operator-bundle:26.2.14, rhbk/keycloak-operator-bundle:26.4.10, rhbk/keycloak-rhel9:26.2, rhbk/keycloak-rhel9-operator:26.4. Resolved in Red Hat advisory RHSA-2026:3925 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat build of Keycloak 26.2; Red Hat build of Keycloak 26.4.
High [CVE-2026-3009] Improper Enforcement of Disabled Identity Provider in IdentityBrokerService (Authentication Bypass)
Improper Enforcement of Disabled Identity Provider in IdentityBrokerService (Authentication Bypass). Red Hat rates this important (CVSS 8.1). Weakness: CWE-863. Affected package(s): rhbk/keycloak-rhel9, rhbk/keycloak-operator-bundle:26.4.10, rhbk/keycloak-rhel9-operator:26.4, rhbk/keycloak-rhel9:26.4. Resolved in Red Hat advisory RHSA-2026:3947 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat build of Keycloak 26.4; Red Hat JBoss Enterprise Application Platform Expansion Pack.
High [CVE-2026-1605] Denial of Service due to unreleased JDK Inflater from compressed HTTP requests
Denial of Service due to unreleased JDK Inflater from compressed HTTP requests. Red Hat rates this important (CVSS 7.5). Weakness: CWE-772. Affected package(s): eap8-eap-product-conf-parent, eap8-wildfly, devspaces/openvsx-rhel9:1779528224, eap8-activemq-artemis, jetty-server, devspaces/pluginregistry-rhel9:1779359423. Resolved in Red Hat advisory RHSA-2026:25089 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 8; Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 9; Red Hat OpenShift Dev Spaces 3.28; Red Hat JBoss Enterprise Application Platform Expansion Pack; and 11 more.
High [CVE-2025-45691] arbitrary file read via improper URL validation in multimodal inputs
arbitrary file read via improper URL validation in multimodal inputs. Red Hat rates this important (CVSS 7.5). Weakness: CWE-918. 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-2025-69534] denial of service via malformed HTML-like sequences
denial of service via malformed HTML-like sequences. Red Hat rates this important (CVSS 8.2). Weakness: CWE-617. Affected package(s): rhdh/rhdh-hub-rhel9:1776784286, python3.12-markdown, rhoai/odh-training-rocm62-torch25-py311-rhel9:1776272253, automation-controller, rhdh/rhdh-hub-rhel9:1777903262, rhoai/odh-training-cuda124-torch25-py311-rhel9:1776243287. Resolved in Red Hat advisory RHSA-2026:13826 — 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 Enterprise Linux 10.0 Extended Update Support; and 11 more.
High [CVE-2026-27803] Unauthorized collection management operations due to improper access control
Unauthorized collection management operations due to improper access control. Red Hat rates this important (CVSS 8.3). Weakness: CWE-266. 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-2026-27802] Privilege Escalation via Unauthorized Bulk Permission Update
Privilege Escalation via Unauthorized Bulk Permission Update. Red Hat rates this important (CVSS 8.1). Weakness: CWE-266. 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-2026-0847] Arbitrary file read via path traversal vulnerability
Arbitrary file read via path traversal vulnerability. Red Hat rates this important (CVSS 7.5). Weakness: CWE-22. Affected package(s): rhoai/odh-workbench-jupyter-pytorch-llmcompressor-cuda-py312-rhel9:1778263054, rhoai/odh-llama-stack-core-rhel9:1775144403, rhoai/odh-pipeline-runtime-pytorch-llmcompressor-cuda-py312-rhel9:1778262893. Resolved in Red Hat advisory RHSA-2026:19712 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat OpenShift AI 2.25; Red Hat OpenShift AI 3.3; OpenShift Lightspeed; Red Hat Ansible Automation Platform 2; and 1 more.
High [CVE-2026-3520] Denial of Service via malformed requests
Denial of Service via malformed requests. Red Hat rates this important (CVSS 7.5). Weakness: CWE-770. Affected package(s): rhdh/rhdh-hub-rhel9:1774545605, rhdh/rhdh-hub-rhel9:1775140647. Resolved in Red Hat advisory RHSA-2026:6174 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Developer Hub 1.8; Red Hat Developer Hub 1.9.