Red Hat Linux Security Advisories & CVEs
6143 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-2026-4271] Denial of Service via Use-After-Free in HTTP/2 server
Denial of Service via Use-After-Free in HTTP/2 server. Red Hat rates this moderate (CVSS 5.3). Weakness: CWE-416. Affected package(s): libsoup3. Resolved in Red Hat advisory RHSA-2026:17482 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux 1.
Medium [CVE-2026-31885] FreeRDP has an out-of-bounds read in ADPCM decoders due to missing predictor/step_index bounds checks
FreeRDP has an out-of-bounds read in ADPCM decoders due to missing predictor/step_index bounds checks. Red Hat rates this moderate (CVSS 6.5). Weakness: CWE-125. Affected package(s): freerdp. Resolved in Red Hat advisory RHSA-2026:19142 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux 8; Red Hat Enterprise Linux 9; Red Hat Enterprise Linux 7; Red Hat Enterprise Linux 1.
Medium [CVE-2026-31884] FreeRDP has a division-by-zero in ADPCM decoders when `nBlockAlign` is 0
FreeRDP has a division-by-zero in ADPCM decoders when `nBlockAlign` is 0. Red Hat rates this moderate (CVSS 6.5). Weakness: CWE-369. Affected package(s): freerdp. Resolved in Red Hat advisory RHSA-2026:19142 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux 8; Red Hat Enterprise Linux 9; Red Hat Enterprise Linux 7; Red Hat Enterprise Linux 1.
Medium [CVE-2026-29775] FreeRDP has a heap-buffer-overflow in bitmap_cache_put via OOB cacheId
FreeRDP has a heap-buffer-overflow in bitmap_cache_put via OOB cacheId. Red Hat rates this moderate (CVSS 5.3). Weakness: CWE-787. Affected package(s): freerdp. Resolved in Red Hat advisory RHSA-2026:19142 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux 8; Red Hat Enterprise Linux 9; Red Hat Enterprise Linux 7; Red Hat Enterprise Linux 1.
Medium [CVE-2026-2673] OpenSSL TLS 1.3 server may choose unexpected key agreement group
OpenSSL TLS 1.3 server may choose unexpected key agreement group. Red Hat rates this moderate (CVSS 6.5). Weakness: CWE-325. Affected package(s): openssl-main, jbcs-httpd24-openssl. Resolved in Red Hat advisory RHSA-2026:7261 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux.
Medium [CVE-2025-8766] Excessive permissions of /etc could lead to escalation of privilege in the noobaa-core container
Excessive permissions of /etc could lead to escalation of privilege in the noobaa-core container. Red Hat rates this important (CVSS 6.4). Weakness: CWE-276. 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 Openshift Data Foundation 4.22.
Medium [CVE-2026-4105] Privilege escalation via improper access control in RegisterMachine D-Bus method
Privilege escalation via improper access control in RegisterMachine D-Bus method. Red Hat rates this moderate (CVSS 6.7). Weakness: CWE-284. Affected package(s): systemd-main. Resolved in Red Hat advisory RHSA-2026:7299 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Hardened Images; Red Hat Enterprise Linux 10; Red Hat Enterprise Linux 7; Red Hat Enterprise Linux 8; and 2 more.
Medium [CVE-2026-1527] HTTP header injection and request smuggling vulnerability
HTTP header injection and request smuggling vulnerability. Red Hat rates this moderate (CVSS 6.5). Weakness: CWE-93. Affected package(s): nodejs24, nodejs:24. Resolved in Red Hat advisory RHSA-2026:7350 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux 1.
Medium [CVE-2026-2581] Denial of Service due to uncontrolled resource consumption
Denial of Service due to uncontrolled resource consumption. Red Hat rates this moderate (CVSS 5.9). Weakness: CWE-770. Affected package(s): nodejs24, nodejs:24. Resolved in Red Hat advisory RHSA-2026:7350 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux 1.
Medium [CVE-2026-32235] @backstage/plugin-auth-backend: @backstage/plugin-auth-backend: OAuth redirect URI allowlist bypass
@backstage/plugin-auth-backend: @backstage/plugin-auth-backend: OAuth redirect URI allowlist bypass. Red Hat rates this moderate (CVSS 5.9). Weakness: CWE-601. Affected package(s): rhdh/rhdh-hub-rhel9:1780930740. Resolved in Red Hat advisory RHSA-2026:24841 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux.
Medium [CVE-2026-31988] Denial of Service vulnerability in zip file processing
Denial of Service vulnerability in zip file processing. Red Hat rates this moderate (CVSS 5.3). Weakness: CWE-193. Affected package(s): rhdh/rhdh-hub-rhel9:1780930740. Resolved in Red Hat advisory RHSA-2026:24841 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux.
Medium [CVE-2026-31958] Denial of Service via large multipart bodies
Denial of Service via large multipart bodies. Red Hat rates this moderate (CVSS 5.3). Weakness: CWE-770. Affected package(s): rhoai/odh-pipeline-runtime-pytorch-cuda-py312-rhel9:1780078429, rhoai/odh-llama-stack-core-rhel9:1775144403, python-tornado, rhoai/odh-workbench-codeserver-datascience-cpu-py312-rhel9:1780078388, rhoai/odh-workbench-jupyter-minimal-cuda-py312-rhel9:1780069224, pcs. Resolved in Red Hat advisory RHSA-2026:24342 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux 1; Red Hat Enterprise Linux 8; Red Hat Enterprise Linux 7; Red Hat Enterprise Linux 9.
Medium [CVE-2026-3904] nscd client crash on x86_64 under high nscd load
nscd client crash on x86_64 under high nscd load. Red Hat rates this moderate (CVSS 5.9). Weakness: CWE-366. Affected package(s): glibc-main. Resolved in Red Hat advisory RHSA-2026:7316 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux.
Medium [CVE-2026-3805] Arbitrary code execution or Denial of Service via use-after-free in SMB request handling
Arbitrary code execution or Denial of Service via use-after-free in SMB request handling. Red Hat rates this moderate (CVSS 6.3). Weakness: CWE-825. 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-2026-3784] 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.