Red Hat Linux Security Advisories & Vulnerabilities
16064 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
Medium [CVE-2026-2781] Integer overflow in the Libraries component in NSS
Integer overflow in the Libraries component in NSS. Red Hat rates this moderate (CVSS 6.1). Affected package(s): thunderbird, firefox. Resolved in Red Hat advisory RHSA-2026:3984 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux 9; Red Hat Enterprise Linux 8; Red Hat Enterprise Linux 7; Red Hat Enterprise Linux 1.
Medium [CVE-2026-2779] Incorrect boundary conditions in the Networking: JAR component
Incorrect boundary conditions in the Networking: JAR component. Red Hat rates this moderate (CVSS 6.1). Affected package(s): thunderbird, firefox. Resolved in Red Hat advisory RHSA-2026:3984 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux 9; Red Hat Enterprise Linux 8; Red Hat Enterprise Linux 7; Red Hat Enterprise Linux 1.
Medium [CVE-2026-3121] Privilege escalation via manage-clients permission
Privilege escalation via manage-clients permission. Red Hat rates this moderate (CVSS 6.5). Weakness: CWE-266. 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.
Medium [CVE-2026-3118] GraphQL Injection Leading to Platform-Wide Denial of Service (DoS) in RH Developer Hub Orchestrator Plugin
GraphQL Injection Leading to Platform-Wide Denial of Service (DoS) in RH Developer Hub Orchestrator Plugin. Red Hat rates this moderate (CVSS 6.5). Weakness: CWE-89. Affected package(s): rhdh/rhdh-hub-rhel9:1777903262, rhdh/rhdh-hub-rhel9:1776784286. Resolved in Red Hat advisory RHSA-2026:13826 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux.
Low [CVE-2026-2791] Mitigation bypass in the Networking: Cache component
Mitigation bypass in the Networking: Cache component. Red Hat rates this low (CVSS 3.4). Affected package(s): thunderbird, firefox. Resolved in Red Hat advisory RHSA-2026:3984 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux 9; Red Hat Enterprise Linux 8; Red Hat Enterprise Linux 7; Red Hat Enterprise Linux 1.
Low [CVE-2026-2790] Same-origin policy bypass in the Networking: JAR component
Same-origin policy bypass in the Networking: JAR component. Red Hat rates this low (CVSS 3.4). Affected package(s): thunderbird, firefox. Resolved in Red Hat advisory RHSA-2026:3984 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux 9; Red Hat Enterprise Linux 8; Red Hat Enterprise Linux 7; Red Hat Enterprise Linux 1.
High [CVE-2026-27623] Denial of Service via specially crafted network requests
Denial of Service via specially crafted network requests. Red Hat rates this important (CVSS 7.5). Weakness: CWE-617. 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-2026-21863] Denial of Service via invalid clusterbus packet
Denial of Service via invalid clusterbus packet. Red Hat rates this important (CVSS 7.5). Weakness: CWE-125. Affected package(s): valkey, valkey-main. Resolved in Red Hat advisory RHSA-2026:3507 — 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 9; Red Hat Hardened Images.
High [CVE-2025-67733] Data tampering and denial of service via improper null character handling in Lua scripts
Data tampering and denial of service via improper null character handling in Lua scripts. Red Hat rates this important (CVSS 7.1). Weakness: CWE-170. Affected package(s): valkey. Resolved in Red Hat advisory RHSA-2026:3507 — 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 9.
High [CVE-2026-25747] Arbitrary code execution via deserialization of untrusted data
Arbitrary code execution via deserialization of untrusted data. Red Hat rates this important (CVSS 7.8). Weakness: CWE-502. 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 build of Apache Camel for Spring Boot 4; Red Hat Fuse 7; Red Hat JBoss Enterprise Application Platform Expansion Pack.
High [CVE-2025-14905] Remote Code Execution and Denial of Service via heap buffer overflow
Remote Code Execution and Denial of Service via heap buffer overflow. Red Hat rates this moderate (CVSS 7.2). Weakness: CWE-122. Affected package(s): 389-ds-base, 389-ds:1.4, redhat-ds:11, dirsrv/dirsrv-container-rhel10:1772040913, redhat-ds:12. Resolved in Red Hat advisory RHSA-2026:3379 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Directory Server 11.5 E4S for RHEL 8; Red Hat Directory Server 11.7 E4S for RHEL 8; Red Hat Directory Server 11.9 for RHEL 8; Red Hat Directory Server 12.2 E4S for RHEL 9; and 16 more.
High [CVE-2026-3062] Out of bounds read and write in Tint
Out of bounds read and write in Tint. 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-2026-3061] Out of bounds read in Media
Out of bounds read in Media. 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-2026-3063] Inappropriate implementation in DevTools
Inappropriate implementation in DevTools. 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.
Medium [CVE-2025-61145] Denial of service via double free in tiffcrop.c
Denial of service via double free in tiffcrop.c. Red Hat rates this moderate (CVSS 5). Weakness: CWE-1341. Affected package(s): libtiff-main. Resolved in Red Hat advisory RHSA-2026:7504 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux.
Medium [CVE-2025-61144] Denial of Service via buffer overflow
Denial of Service via buffer overflow. Red Hat rates this moderate (CVSS 5). Weakness: CWE-805. Affected package(s): libtiff-main. Resolved in Red Hat advisory RHSA-2026:7504 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux.
Medium [CVE-2025-61143] Denial of Service via NULL pointer dereference in tif_open.c
Denial of Service via NULL pointer dereference in tif_open.c. Red Hat rates this moderate (CVSS 5.5). Weakness: CWE-476. Affected package(s): libtiff-main. Resolved in Red Hat advisory RHSA-2026:7504 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux.
High [CVE-2026-27134] Unauthorized authentication via misconfigured mTLS CA chain
Unauthorized authentication via misconfigured mTLS CA chain. Red Hat rates this important (CVSS 8.1). 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-2026-2635] MLflow Use of Default Password Authentication Bypass Vulnerability
MLflow Use of Default Password Authentication Bypass Vulnerability. Red Hat rates this important (CVSS 7.3). Weakness: CWE-798. 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-2026-2048] Remote Code Execution via XWD file parsing vulnerability
Remote Code Execution via XWD file parsing vulnerability. Red Hat rates this important (CVSS 7.8). Weakness: CWE-787. Affected package(s): gimp, gimp:2.8. Resolved in Red Hat advisory RHSA-2026:5391 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux 8.2 Advanced Update 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; Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support; and 8 more.
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