Red Hat Linux Security Advisories & Vulnerabilities
16044 advisories tracked · Red Hat Security Data API · direct feeds checked every minute; rate-limited sources checked less often
Get an email when Red Hat publishes the next one.
See Red Hat's last 90 days of advisories first. Then choose one product with live alerts free for life, or a free month of real-time alerts on everything with the severity, the fixed version and the vendor's link (card needed, then US$15/month; we email you before the first charge).
iPhone and Android apps · New on the App Store
Monitor Red Hat CVEs from your phone.
Choose a whole vendor or a precise platform, then receive matching security advisories by phone notification, email, or both. Coverage follows 34 official vendor sources and 160+ reviewed platform categories.
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.
Official source
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
Low [CVE-2026-3911] org.keycloak.services.resources.admin.UserResource: Keycloak: Information disclosure of disabled user attributes via administrative endpoint
org.keycloak.services.resources.admin. UserResource: Keycloak: Information disclosure of disabled user attributes via administrative endpoint. Red Hat rates this low (CVSS 2.7). Weakness: CWE-359. Affected package(s): rhbk/keycloak-operator-bundle:26.4.11, rhbk/keycloak-rhel9, rhbk/keycloak-rhel9-operator:26.4, rhbk/keycloak-rhel9:26.4. Resolved in Red Hat advisory RHSA-2026:6478 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux.
Critical [CVE-2026-3913] Heap buffer overflow in WebML
Heap buffer overflow in WebML. Red Hat rates this critical (CVSS 9.6). 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-2026-31837] Information disclosure and authentication bypass via JWKS resolver unavailability
Information disclosure and authentication bypass via JWKS resolver unavailability. Red Hat rates this important (CVSS 7.5). Weakness: CWE-1392. Affected package(s): openshift-service-mesh/istio-proxyv2-rhel9:1774114903, rhoai/odh-kserve-agent-rhel9:1776343082, openshift-service-mesh/istio-proxyv2-rhel9:1774068855, openshift-service-mesh/istio-pilot-rhel9:1774037369, rhoai/odh-kserve-router-rhel9:1776343121, rhoai/odh-kserve-controller-rhel9:1776343105. Resolved in Red Hat advisory RHSA-2026:10184 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat OpenShift AI 2.25; Red Hat OpenShift Service Mesh 3.0; Red Hat OpenShift Service Mesh 3.1; Red Hat OpenShift Service Mesh 3.2; and 3 more.
High [CVE-2026-30951] Data exfiltration via SQL injection in JSON/JSONB where clause processing
Data exfiltration via SQL injection in JSON/JSONB where clause processing. Red Hat rates this important (CVSS 7.5). Weakness: CWE-89. Affected package(s): satellite/iop-remediations-rhel9:1776194798. Resolved in Red Hat advisory RHSA-2026:8498 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Satellite 6.18; Confidential Compute Attestation.
High [CVE-2026-23868] Double-free vulnerability leading to memory corruption
Double-free vulnerability leading to memory corruption. Red Hat rates this important (CVSS 7). Weakness: CWE-825. Affected package(s): giflib, 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-2026:8859 — 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-2026-28292] Remote Code Execution via bypass of prior security fixes
Remote Code Execution via bypass of prior security fixes. Red Hat rates this important (CVSS 8.8). Weakness: CWE-76. 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: Logging Subsystem for Red Hat OpenShift.
High [CVE-2026-26130] Denial of Service via uncontrolled resource allocation
Denial of Service via uncontrolled resource allocation. Red Hat rates this important (CVSS 7.5). Weakness: CWE-770. Affected package(s): dotnet8.0, dotnet9.0, dotnet10.0. Resolved in Red Hat advisory RHSA-2026:4458 — 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; Red Hat Enterprise Linux 9.4 Extended Update Support; Red Hat Enterprise Linux 9.6 Extended Update Support.
High [CVE-2026-26127] .net: .NET: Denial of Service via out-of-bounds read
.net:.NET: Denial of Service via out-of-bounds read. Red Hat rates this moderate (CVSS 7.5). Weakness: CWE-125. Affected package(s): dotnet9.0, dotnet10.0. Resolved in Red Hat advisory RHSA-2026:10083 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux 1; Red Hat Enterprise Linux 9; Red Hat Enterprise Linux 8.
High [CVE-2026-26131] .NET: Privilege escalation via incorrect default permissions
.NET: Privilege escalation via incorrect default permissions. Red Hat rates this moderate (CVSS 7.8). Weakness: CWE-276. Affected package(s): dotnet10. Resolved in Red Hat advisory RHSA-2026:9077 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux.
High [CVE-2026-3918] Use after free in WebMCP
Use after free in WebMCP. Red Hat rates this important (CVSS 8.8). 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-2026-3921] Use after free in TextEncoding
Use after free in TextEncoding. Red Hat rates this important (CVSS 8.8). 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-2026-3923] Use after free in WebMIDI
Use after free in WebMIDI. Red Hat rates this important (CVSS 8.8). 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-2026-3914] Integer overflow in WebML
Integer overflow in WebML. Red Hat rates this important (CVSS 8.8). 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-2026-3919] Use after free in Extensions
Use after free in Extensions. Red Hat rates this important (CVSS 8.8). 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-2026-3916] Out of bounds read in Web Speech
Out of bounds read in Web Speech. Red Hat rates this important (CVSS 8.8). 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-2026-3915] Heap buffer overflow in WebML
Heap buffer overflow in WebML. Red Hat rates this important (CVSS 8.8). 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-2026-3917] Use after free in Agents
Use after free in Agents. Red Hat rates this important (CVSS 8.8). 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-2026-3920] Out of bounds memory access in WebML
Out of bounds memory access in WebML. Red Hat rates this important (CVSS 8.8). 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-2026-3922] Use after free in MediaStream
Use after free in MediaStream. Red Hat rates this important (CVSS 8.8). 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-2026-3924] Use after free in WindowDialog
Use after free in WindowDialog. Red Hat rates this important (CVSS 8.8). 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.
Free weekly CVE digest
Every Monday: the week's critical and high advisories for Red Hat or every vendor, new CISA KEV entries and upcoming end-of-life dates.