Red Hat Linux Security Advisories & CVEs
6249 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
Medium [CVE-2026-3784] Unauthorized access due to improper HTTP proxy connection reuse
Unauthorized access due to improper HTTP proxy connection reuse. Red Hat rates this moderate (CVSS 6.5). Weakness: CWE-305. Affected package(s): curl-main. Resolved in Red Hat advisory RHSA-2026:6893 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux.
Medium [CVE-2026-3783] Information disclosure via OAuth2 bearer token leakage during HTTP(S) redirect
Information disclosure via OAuth2 bearer token leakage during HTTP(S) redirect. Red Hat rates this moderate (CVSS 5.7). Weakness: CWE-201. Affected package(s): curl-main. Resolved in Red Hat advisory RHSA-2026:6893 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux.
Medium [CVE-2026-1965] Authentication bypass due to incorrect connection reuse with Negotiate authentication
Authentication bypass due to incorrect connection reuse with Negotiate authentication. Red Hat rates this moderate (CVSS 6.8). Weakness: CWE-303. Affected package(s): curl-main. Resolved in Red Hat advisory RHSA-2026:6893 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux.
Medium [CVE-2026-31812] Denial of Service via crafted QUIC Initial packet
Denial of Service via crafted QUIC Initial packet. Red Hat rates this important (CVSS 5.3). Weakness: CWE-248. Affected package(s): ansible-automation-platform, rhoai/odh-model-registry-job-async-upload-rhel9:1778596806, rhtas/tuffer-rhel9:1773307309, rhtas/tuftool-rhel9:1773307309, openshift-logging/vector-rhel9:1780052069. Resolved in Red Hat advisory RHSA-2026:19712 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Logging Subsystem for Red Hat OpenShift 6.4; Red Hat Ansible Automation Platform 2.6; Red Hat OpenShift AI 3.3; Red Hat Trusted Artifact Signer 1.3; and 7 more.
Medium [CVE-2026-30942] Information disclosure via authenticated path traversal
Information disclosure via authenticated path traversal. Red Hat rates this important (CVSS 6.5). Weakness: CWE-22. 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-2026-31802] File overwrite via drive-relative symlink traversal
File overwrite via drive-relative symlink traversal. Red Hat rates this moderate (CVSS 6.2). Weakness: CWE-22. Affected package(s): devspaces/dashboard-rhel9:1779341289, devspaces/code-rhel9:1779814592. Resolved in Red Hat advisory RHSA-2026:21772 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux.
Medium [CVE-2026-3836] Denial of Service via path traversal in D-Bus locale configuration
Denial of Service via path traversal in D-Bus locale configuration. Red Hat rates this moderate (CVSS 5.5). Weakness: CWE-22. Affected package(s): dnf5-main. Resolved in Red Hat advisory RHSA-2026:7349 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux.
Medium [CVE-2026-3731] Denial of Service via out-of-bounds read in SFTP extension name handler
Denial of Service via out-of-bounds read in SFTP extension name handler. Red Hat rates this moderate (CVSS 5.3). Weakness: CWE-125. Affected package(s): libssh-main. Resolved in Red Hat advisory RHSA-2026:7067 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux.
Medium [CVE-2026-3713] Heap-based buffer overflow in pnm2png allows information disclosure and denial of service
Heap-based buffer overflow in pnm2png allows information disclosure and denial of service. Red Hat rates this moderate (CVSS 5.3). Weakness: CWE-131. Affected package(s): libpng-main. Resolved in Red Hat advisory RHSA-2026:6732 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux.
Medium [CVE-2026-27142] URLs in meta content attribute actions are not escaped in html/template
URLs in meta content attribute actions are not escaped in html/template. Red Hat rates this moderate (CVSS 5.4). Weakness: CWE-79. Affected package(s): golang1. Resolved in Red Hat advisory RHSA-2026:7291 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux.
Medium [CVE-2025-12801] rpc.mountd in the nfs-utils privilege escalation
rpc.mountd in the nfs-utils privilege escalation. Red Hat rates this moderate (CVSS 6.5). Weakness: CWE-279. Affected package(s): nfs-utils, rhcos, rhceph/rhceph. Resolved in Red Hat advisory RHSA-2026:5606 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux 10; Red Hat Enterprise Linux 8; Red Hat Enterprise Linux 9.4 Extended Update Support; Red Hat Enterprise Linux 9.6 Extended Update Support; and 6 more.
Medium [CVE-2026-27601] Denial of Service via recursive data structures in flatten and isEqual functions
Denial of Service via recursive data structures in flatten and isEqual functions. Red Hat rates this moderate (CVSS 5.9). Weakness: CWE-606. Affected package(s): rhdh/rhdh-hub-rhel9:1777903262, rhdh/rhdh-hub-rhel9:1780930740, 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.
Medium [CVE-2026-23865] Information disclosure or denial of service via specially crafted font files
Information disclosure or denial of service via specially crafted font files. Red Hat rates this moderate (CVSS 5.3). Affected package(s): java, freetype-main. Resolved in Red Hat advisory RHSA-2026:11822 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux 7; Red Hat Enterprise Linux 8; Red Hat Enterprise Linux 9; Red Hat Enterprise Linux 1.
Medium [CVE-2026-3441] Information disclosure via specially crafted XCOFF object file
Information disclosure via specially crafted XCOFF object file. Red Hat rates this moderate (CVSS 6.1). Weakness: CWE-125. Affected package(s): binutils-main. Resolved in Red Hat advisory RHSA-2026:33527 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Hardened Images; Red Hat Enterprise Linux 6.
Medium [CVE-2026-3442] Information disclosure or denial of service via out-of-bounds read in bfd linker
Information disclosure or denial of service via out-of-bounds read in bfd linker. Red Hat rates this moderate (CVSS 6.1). Weakness: CWE-125. Affected package(s): binutils-main. Resolved in Red Hat advisory RHSA-2026:33527 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Hardened Images; Red Hat Enterprise Linux 6.
Medium [CVE-2026-3429] Improper Access Control Leading to MFA Deletion and Account Takeover in Keycloak Account REST API
Improper Access Control Leading to MFA Deletion and Account Takeover in Keycloak Account REST API. Red Hat rates this moderate (CVSS 4.2). Weakness: CWE-284. 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-2026-28421] Denial of service and information disclosure via crafted swap file
Denial of service and information disclosure via crafted swap file. Red Hat rates this moderate (CVSS 5.3). Weakness: CWE-120. Affected package(s): rhcos, rhaiis/vllm-rocm-rhel9:1778244531, rhui5/cds-kubernetes-tp-rhel9:1777459441, rhui5/haproxy-rhel9:1776868744, rhui5/installer-rhel9:1776868772, vim. Resolved in Red Hat advisory RHSA-2026:6915 — 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; Red Hat Enterprise Linux 7.
Medium [CVE-2026-28417] Arbitrary code execution via OS command injection in the netrw plugin
Arbitrary code execution via OS command injection in the netrw plugin. Red Hat rates this moderate (CVSS 4.4). Weakness: CWE-78. Affected package(s): rhcos, rhaiis/vllm-rocm-rhel9:1778244531, rhui5/cds-kubernetes-tp-rhel9:1777459441, rhui5/haproxy-rhel9:1776868744, rhui5/installer-rhel9:1776868772, vim. Resolved in Red Hat advisory RHSA-2026:6915 — 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; Red Hat Enterprise Linux 7.
Medium [CVE-2026-27141] Denial of Service due to malformed HTTP/2 frames
Denial of Service due to malformed HTTP/2 frames. Red Hat rates this moderate (CVSS 5.3). Weakness: CWE-476. Affected package(s): openshift-pipelines/pipelines-operator-bundle:1781686494, openshift-pipelines/pipelines-rhel9-operator:1780645012, golang1. Resolved in Red Hat advisory RHSA-2026:7385 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux.
Medium [CVE-2026-27904] Denial of Service via catastrophic backtracking in glob expressions
Denial of Service via catastrophic backtracking in glob expressions. Red Hat rates this moderate (CVSS 6.5). Weakness: CWE-1333. Affected package(s): quay/quay-rhel9:1775069491, nodejs:20, nodejs:22, rhoai/odh-workbench-codeserver-datascience-cpu-py312-rhel9:1776336652, devspaces/openvsx-rhel9:1779528224, satellite/iop-advisor-frontend-rhel9:1781181673. 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 8; Red Hat Enterprise Linux 1; Red Hat Enterprise Linux 9.