Red Hat Linux Security Advisories & CVEs
3067 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 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-2026-6784] Memory safety bugs fixed in Firefox 150 and Thunderbird 150
Memory safety bugs fixed in Firefox 150 and Thunderbird 150. Red Hat rates this important (CVSS 7.5). 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.
High [CVE-2026-6785] Memory safety bugs fixed in Firefox ESR 115.35, Firefox ESR 140.10, Thunderbird ESR 140.10, Firefox 150 and Thunderbird 150
Memory safety bugs fixed in Firefox ESR 115.35, Firefox ESR 140.10, Thunderbird ESR 140.10, Firefox 150 and Thunderbird 150. Red Hat rates this important (CVSS 7.5). Weakness: CWE-787. Affected package(s): thunderbird, firefox. Resolved in Red Hat advisory RHSA-2026:10757 — 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-2026-6754] Use-after-free in the JavaScript Engine component
Use-after-free in the JavaScript Engine component. Red Hat rates this important (CVSS 7.5). Weakness: CWE-825. Affected package(s): thunderbird, firefox. Resolved in Red Hat advisory RHSA-2026:10757 — 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-2026-6752] Incorrect boundary conditions in the WebRTC component
Incorrect boundary conditions in the WebRTC component. Red Hat rates this important (CVSS 7.5). Weakness: CWE-131. Affected package(s): thunderbird, firefox. Resolved in Red Hat advisory RHSA-2026:10757 — 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-2026-6753] Incorrect boundary conditions in the WebRTC component
Incorrect boundary conditions in the WebRTC component. Red Hat rates this important (CVSS 7.5). Weakness: CWE-787. Affected package(s): thunderbird, firefox. Resolved in Red Hat advisory RHSA-2026:10757 — 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-2026-6751] Uninitialized memory in the Audio/Video: Web Codecs component
Uninitialized memory in the Audio/Video: Web Codecs component. Red Hat rates this important (CVSS 7.5). Weakness: CWE-824. Affected package(s): thunderbird, firefox. Resolved in Red Hat advisory RHSA-2026:10757 — 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-2026-6750] Privilege escalation in the Graphics: WebRender component
Privilege escalation in the Graphics: WebRender component. Red Hat rates this important (CVSS 7.5). Weakness: CWE-266. Affected package(s): thunderbird, firefox. Resolved in Red Hat advisory RHSA-2026:10757 — 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-2026-6749] Information disclosure due to uninitialized memory in the Graphics: Canvas2D component
Information disclosure due to uninitialized memory in the Graphics: Canvas2D component. Red Hat rates this important (CVSS 7.5). Weakness: CWE-824. Affected package(s): thunderbird, firefox. Resolved in Red Hat advisory RHSA-2026:10757 — 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-2026-6747] Use-after-free in the WebRTC component
Use-after-free in the WebRTC component. Red Hat rates this important (CVSS 7.5). Weakness: CWE-825. Affected package(s): thunderbird, firefox. Resolved in Red Hat advisory RHSA-2026:10757 — 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-2026-6746] Use-after-free in the DOM: Core & HTML component
Use-after-free in the DOM: Core & HTML component. Red Hat rates this important (CVSS 7.5). Weakness: CWE-825. Affected package(s): thunderbird, firefox. Resolved in Red Hat advisory RHSA-2026:10757 — 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-2026-40244] Arbitrary code execution via integer overflow in EXR image processing
Arbitrary code execution via integer overflow in EXR image processing. Red Hat rates this important (CVSS 8.2). 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-2026-28684] Arbitrary file overwrite via symbolic link following
Arbitrary file overwrite via symbolic link following. Red Hat rates this moderate (CVSS 7.1). Weakness: CWE-59. Affected package(s): rhoai/odh-mlserver-rhel9:1778262856, rhoai/odh-feature-server-rhel9:1780069135, rhoai/odh-kserve-storage-initializer-rhel9:1780069127, rhoai/odh-vllm-gaudi-rhel9:1780069069, satellite/iop-host-inventory-rhel9:1780414237, rhoai/odh-vllm-gaudi-rhel9:1778600187. Resolved in Red Hat advisory RHSA-2026:19712 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux.
High [CVE-2026-33557] Authentication bypass via improper JWT validation
Authentication bypass via improper JWT validation. Red Hat rates this important (CVSS 8.6). Weakness: CWE-303. 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 build of Debezium 3.
High [CVE-2026-6654] Memory corruption vulnerability via Double-Free/Use-After-Free
Memory corruption vulnerability via Double-Free/Use-After-Free. Red Hat rates this important (CVSS 7.3). Weakness: CWE-1341. 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-2026-6587] vibrantlabsai RAGAS: vibrantlabsai RAGAS: Server-Side Request Forgery via retrieved_contexts argument manipulation
vibrantlabsai RAGAS: vibrantlabsai RAGAS: Server-Side Request Forgery via retrieved_contexts argument manipulation. Red Hat rates this important (CVSS 8.1). 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-2026-41242] Arbitrary code execution via injected protobuf definition type fields
Arbitrary code execution via injected protobuf definition type fields. Red Hat rates this important (CVSS 8.8). Weakness: CWE-94. Affected package(s): rhdh/rhdh-hub-rhel9:1779841586, rhdh/rhdh-hub-rhel9:1781187342, rhoai/odh-mod-arch-model-registry-rhel9:1780467147, rhoai/odh-dashboard-rhel9:1780467029. Resolved in Red Hat advisory RHSA-2026:21338 — 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; Red Hat OpenShift AI 2.25; Red Hat OpenShift AI 3.3; and 5 more.
High [CVE-2026-40478] Server-Side Template Injection via expression execution bypass
Server-Side Template Injection via expression execution bypass. Red Hat rates this important (CVSS 8.5). Weakness: CWE-917. Affected package(s): devspaces/openvsx-rhel9:1779528224, devspaces/pluginregistry-rhel9:1779359423. Resolved in Red Hat advisory RHSA-2026:21772 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat OpenShift Dev Spaces 3.28; Red Hat Fuse 7; Red Hat Single Sign-On 7; Red Hat JBoss Enterprise Application Platform Expansion Pack.
High [CVE-2026-40477] Server-Side Template Injection via security bypass in expression execution
Server-Side Template Injection via security bypass in expression execution. Red Hat rates this important (CVSS 8.5). Weakness: CWE-917. Affected package(s): devspaces/openvsx-rhel9:1779528224, devspaces/pluginregistry-rhel9:1779359423. Resolved in Red Hat advisory RHSA-2026:21772 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat OpenShift Dev Spaces 3.28; Red Hat Fuse 7; Red Hat Single Sign-On 7; Red Hat JBoss Enterprise Application Platform Expansion Pack.
High [CVE-2026-42965] cloud metadata SSRF via FQDN-typed EndpointSlice bypasses destination validation
cloud metadata SSRF via FQDN-typed EndpointSlice bypasses destination validation. Red Hat rates this important (CVSS 7.7). Weakness: CWE-918. 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 OpenShift Container Platform 4.21; Red Hat OpenShift Container Platform 4.22; Red Hat OpenShift Container Platform 4.20.
High [CVE-2026-40293] Information disclosure of preshared API key via playground endpoint
Information disclosure of preshared API key via playground endpoint. Red Hat rates this important (CVSS 7.5). Weakness: CWE-201. Affected package(s): multicluster-globalhub/multicluster-globalhub-grafana-rhel9:1779925273, rhacm2/acm-grafana-rhel9:1780677003. Resolved in Red Hat advisory RHSA-2026:24539 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Advanced Cluster Management for Kubernetes 2.14; Red Hat Advanced Cluster Management for Kubernetes 2.15.