Red Hat Linux Security Advisories & CVEs
3066 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-2026-31931] Denial of Service via 'tls.alpn' rule keyword
Denial of Service via 'tls.alpn' rule keyword. Red Hat rates this important (CVSS 7.5). Weakness: CWE-476. 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-2026-3872] Information disclosure due to redirect_uri validation bypass
Information disclosure due to redirect_uri validation bypass. Red Hat rates this important (CVSS 7.3). Weakness: CWE-601. Affected package(s): rhbk/keycloak-rhel9-operator:26.2, rhbk/keycloak-rhel9, rhbk/keycloak-operator-bundle:26.4.11, rhbk/keycloak-rhel9:26.2, rhbk/keycloak-operator-bundle:26.2.15, rhbk/keycloak-rhel9-operator:26.4. Resolved in Red Hat advisory RHSA-2026:6478 — 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-2026-4282] Privilege escalation via forged authorization codes due to SingleUseObjectProvider isolation flaw
Privilege escalation via forged authorization codes due to SingleUseObjectProvider isolation flaw. Red Hat rates this important (CVSS 7.4). Weakness: CWE-653. Affected package(s): rhbk/keycloak-rhel9-operator:26.2, rhbk/keycloak-rhel9, rhbk/keycloak-operator-bundle:26.4.11, rhbk/keycloak-rhel9:26.2, rhbk/keycloak-operator-bundle:26.2.15, rhbk/keycloak-rhel9-operator:26.4. Resolved in Red Hat advisory RHSA-2026:6478 — 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-2026-4634] Denial of Service via excessive processing of OpenID Connect scope parameters
Denial of Service via excessive processing of OpenID Connect scope parameters. Red Hat rates this important (CVSS 7.5). Weakness: CWE-1050. Affected package(s): rhbk/keycloak-rhel9-operator:26.2, rhbk/keycloak-rhel9, rhbk/keycloak-operator-bundle:26.4.11, rhbk/keycloak-rhel9:26.2, rhbk/keycloak-operator-bundle:26.2.15, rhbk/keycloak-rhel9-operator:26.4. Resolved in Red Hat advisory RHSA-2026:6478 — 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-2026-4636] UMA policy bypass allows authenticated users to gain unauthorized access to victim-owned resources.
UMA policy bypass allows authenticated users to gain unauthorized access to victim-owned resources.. Red Hat rates this important (CVSS 8.1). Weakness: CWE-551. Affected package(s): rhbk/keycloak-rhel9-operator:26.2, rhbk/keycloak-rhel9, rhbk/keycloak-operator-bundle:26.4.11, rhbk/keycloak-rhel9:26.2, rhbk/keycloak-operator-bundle:26.2.15, rhbk/keycloak-rhel9-operator:26.4. Resolved in Red Hat advisory RHSA-2026:6478 — 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-2026-34545] Remote code execution via crafted EXR files
Remote code execution via crafted EXR files. Red Hat rates this important (CVSS 8.8). 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-2026-27489] Information Disclosure via Path Traversal Vulnerability
Information Disclosure via Path Traversal Vulnerability. Red Hat rates this important (CVSS 8.6). Weakness: CWE-22. Affected package(s): rhoai/odh-pipeline-runtime-pytorch-cuda-py312-rhel9:1780078429, rhoai/odh-pipeline-runtime-tensorflow-rocm-py312-rhel9:1780417775, rhoai/odh-workbench-codeserver-datascience-cpu-py312-rhel9:1780078388, rhoai/odh-workbench-jupyter-trustyai-cpu-py312-rhel9:1780069222, rhoai/odh-pipeline-runtime-pytorch-rocm-py312-rhel9:1780078632, rhoai/odh-pipeline-runtime-datascience-cpu-py312-rhel9:1780078312. Resolved in Red Hat advisory RHSA-2026:24977 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat OpenShift AI 2.25; Red Hat OpenShift AI (RHOAI).
High [CVE-2026-35092] Denial of Service via integer overflow in join message validation
Denial of Service via integer overflow in join message validation. Red Hat rates this moderate (CVSS 7.5). Weakness: CWE-190. Affected package(s): corosync. Resolved in Red Hat advisory RHSA-2026:19043 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux 10.0 Extended Update Support; Red Hat Enterprise Linux 7 Extended Lifecycle Support; Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support; Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On; and 9 more.
High [CVE-2026-35091] Denial of Service and information disclosure via crafted UDP packet
Denial of Service and information disclosure via crafted UDP packet. Red Hat rates this moderate (CVSS 8.2). Weakness: CWE-253. Affected package(s): corosync. Resolved in Red Hat advisory RHSA-2026:19043 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux 10.0 Extended Update Support; Red Hat Enterprise Linux 7 Extended Lifecycle Support; Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support; Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On; and 9 more.
High [CVE-2026-23401] Linux kernel KVM: Privilege escalation or denial of service due to improper shadow page table entry handling
Linux kernel KVM: Privilege escalation or denial of service due to improper shadow page table entry handling. Red Hat rates this important (CVSS 8.1). Weakness: CWE-416. Affected package(s): kernel, kernel-rt. Resolved in Red Hat advisory RHSA-2026:13936 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux 10.0 Extended Update Support; Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support; Red Hat Enterprise Linux 8.6 Telecommunications Update Service; Red Hat Enterprise Linux 8.6 Update Services for SAP Solutions; and 6 more.
High [CVE-2026-35093] Unauthorized code execution and information disclosure through Lua bytecode plugins
Unauthorized code execution and information disclosure through Lua bytecode plugins. Red Hat rates this important (CVSS 8.8). Weakness: CWE-94. 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-2026-34872] Mbed TLS and TF-PSA-Crypto: Shared secret manipulation via improper FFDH input validation
Mbed TLS and TF-PSA-Crypto: Shared secret manipulation via improper FFDH input validation. Red Hat rates this important (CVSS 7.5). Weakness: CWE-1287. 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-2026-4800] Arbitrary code execution via untrusted input in template imports
Arbitrary code execution via untrusted input in template imports. Red Hat rates this important (CVSS 8.1). Weakness: CWE-94. Affected package(s): odf4/ocs-client-console-rhel9:1778050558, odf4/mcg-core-rhel9:1776403991, cluster-observability-operator/troubleshooting-panel-console-plugin-pf6-rhel9:1782839996, odf4/ocs-client-rhel9-operator:1778049818, odf4/odf-cloudnative-pg-rhel9-operator:1776406131, satellite/iop-remediations-rhel9:1776194798. Resolved in Red Hat advisory RHSA-2026:29795 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Ansible Automation Platform 2.6 for RHEL 9; Cryostat 4 on RHEL 9; Red Hat Enterprise Linux AppStream (v. 10); Red Hat Enterprise Linux High Availability EUS (v. 10.0); and 87 more.
High [CVE-2026-34070] path traversal in legacy load_prompt functions in langchain-core
path traversal in legacy load_prompt functions in langchain-core. Red Hat rates this important (CVSS 7.5). Weakness: CWE-22. Affected package(s): ansible-automation-platform. Resolved in Red Hat advisory RHSA-2026:24766 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Ansible Automation Platform 2.5; Red Hat OpenShift AI 3.3; OpenShift Lightspeed.
High [CVE-2026-33997] Privilege validation bypass during plugin installation
Privilege validation bypass during plugin installation. Red Hat rates this important (CVSS 8.4). Weakness: CWE-266. Affected package(s): multicluster-globalhub/multicluster-globalhub-grafana-rhel9:1780167118, multicluster-globalhub/multicluster-globalhub-grafana-rhel9:1778867753, multicluster-globalhub/multicluster-globalhub-grafana-rhel9:1779579439. Resolved in Red Hat advisory RHSA-2026:21769 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat multicluster global hub 1.4.3; Red Hat multicluster global hub 1.4.4; Red Hat multicluster global hub 1.6.0; Red Hat multicluster global hub 1.5.0; and 2 more.
High [CVE-2026-34040] Authorization bypass vulnerability
Authorization bypass vulnerability. Red Hat rates this moderate (CVSS 8.4). Weakness: CWE-807. Affected package(s): multicluster-globalhub/multicluster-globalhub-grafana-rhel9:1779925273, multicluster-globalhub/multicluster-globalhub-grafana-rhel9:1780167118, multicluster-globalhub/multicluster-globalhub-grafana-rhel9:1778867753, multicluster-globalhub/multicluster-globalhub-grafana-rhel9:1779579439. Resolved in Red Hat advisory RHSA-2026:21769 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux.
High [CVE-2026-5201] Denial of Service via heap-based buffer overflow when processing a specially crafted JPEG image
Denial of Service via heap-based buffer overflow when processing a specially crafted JPEG image. Red Hat rates this important (CVSS 7.5). Weakness: CWE-122. Affected package(s): gdk-pixbuf2, rhaiis/vllm-rocm-rhel9:1778244531, rhaiis/vllm-cuda-rhel9:1779223654, rhaiis/vllm-cuda-rhel9:1778274666, rhaiis/vllm-spyre-rhel9:1778244546, rhaiis/model-opt-cuda-rhel9:1780681984. Resolved in Red Hat advisory RHSA-2026:10707 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux 10.0 Extended Update Support; Red Hat Enterprise Linux 7 Extended Lifecycle Support; Red Hat Enterprise Linux 8.2 Advanced Update Support; Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support; and 12 more.
High [CVE-2026-5283] Inappropriate implementation in ANGLE
Inappropriate implementation in ANGLE. Red Hat rates this important (CVSS 7.4). Weakness: CWE-346. 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-2026-33987] Memory corruption vulnerability allows denial of service or arbitrary code execution
Memory corruption vulnerability allows denial of service or arbitrary code execution. Red Hat rates this moderate (CVSS 7.8). Weakness: CWE-131. Affected package(s): freerdp. Resolved in Red Hat advisory RHSA-2026:16014 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux 1.
High [CVE-2026-33986] Arbitrary code execution or denial of service via H.264 codec memory allocation vulnerability
Arbitrary code execution or denial of service via H.264 codec memory allocation vulnerability. Red Hat rates this important (CVSS 7.5). Weakness: CWE-131. 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.