Red Hat Linux Security Advisories & Vulnerabilities
16042 advisories tracked · Red Hat Security Data API · direct feeds checked every minute; rate-limited sources checked less often
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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
Critical [CVE-2026-33210] Denial of Service or Information Disclosure via format string injection
Denial of Service or Information Disclosure via format string injection. Red Hat rates this important (CVSS 9.1). Weakness: CWE-134. Affected package(s): ruby4.0, ruby:4.0. Resolved in Red Hat advisory RHSA-2026:20606 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux 10; Red Hat Enterprise Linux 9; Red Hat Hardened Images.
Critical [CVE-2026-33186] Authorization bypass due to improper HTTP/2 path validation
Authorization bypass due to improper HTTP/2 path validation. Red Hat rates this important (CVSS 9.1). Weakness: CWE-551. Affected package(s): rhoai/odh-pipeline-runtime-pytorch-cuda-py312-rhel9:1780078429, odf4/odf-csi-addons-sidecar-rhel9:1781550957, rhtas/trillian-logserver-rhel9:1776243434, openshift4/ose-cluster-olm-rhel9-operator:1779787336, rhdh/rhdh-rhel9-operator:1774544220, openshift4/ose-csi-driver-nfs-rhel9:1778242571. Resolved in Red Hat advisory RHSA-2026:27893 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat OpenShift Container Platform 4.16; Red Hat OpenShift Container Platform 4.17; Red Hat OpenShift Container Platform 4.18; Red Hat Satellite 6.16 for RHEL 8; and 134 more.
Critical [CVE-2026-23537] Unauthenticated Arbitrary File Write
Unauthenticated Arbitrary File Write. Red Hat rates this critical (CVSS 9.1). Weakness: CWE-862. 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-2026-33236] Arbitrary file overwrite and creation via path traversal in XML index files
Arbitrary file overwrite and creation via path traversal in XML index files. Red Hat rates this important (CVSS 8.1). Weakness: CWE-22. Affected package(s): rhoai/odh-workbench-jupyter-pytorch-llmcompressor-cuda-py312-rhel9:1778263054, rhoai/odh-workbench-jupyter-pytorch-llmcompressor-cuda-py312-rhel9:1776319185, rhoai/odh-pipeline-runtime-pytorch-llmcompressor-cuda-py312-rhel9:1776243238, rhoai/odh-pipeline-runtime-pytorch-llmcompressor-cuda-py312-rhel9:1778262893. Resolved in Red Hat advisory RHSA-2026:19712 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat OpenShift AI 2.25; Red Hat OpenShift AI 3.3; OpenShift Lightspeed; Red Hat Ansible Automation Platform 2; and 1 more.
High [CVE-2026-33231] Denial of Service via unauthenticated remote shutdown
Denial of Service via unauthenticated remote shutdown. Red Hat rates this important (CVSS 7.5). Weakness: CWE-306. Affected package(s): rhoai/odh-workbench-jupyter-pytorch-llmcompressor-cuda-py312-rhel9:1778263054, rhoai/odh-pipeline-runtime-pytorch-llmcompressor-cuda-py312-rhel9:1780069222, rhoai/odh-workbench-jupyter-pytorch-llmcompressor-cuda-py312-rhel9:1780069226, rhoai/odh-pipeline-runtime-pytorch-llmcompressor-cuda-py312-rhel9:1778262893. Resolved in Red Hat advisory RHSA-2026:19712 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat OpenShift AI 2.25; Red Hat OpenShift AI 3.3; OpenShift Lightspeed; Red Hat Ansible Automation Platform 2; and 1 more.
High [CVE-2026-33180] Information disclosure and potential impersonation via HTTP redirects sending sensitive headers
Information disclosure and potential impersonation via HTTP redirects sending sensitive headers. Red Hat rates this important (CVSS 8.2). Weakness: CWE-201. 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 Fuse 7.
High [CVE-2026-33154] Arbitrary code execution via Server-Side Template Injection
Arbitrary code execution via Server-Side Template Injection. Red Hat rates this moderate (CVSS 7.5). Weakness: CWE-917. Affected package(s): ansible-automation-platform, automation-controller. Resolved in Red Hat advisory RHSA-2026:34160 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux 9.
High [CVE-2026-33150] Arbitrary code execution via use-after-free in io_uring subsystem
Arbitrary code execution via use-after-free in io_uring subsystem. Red Hat rates this important (CVSS 7.8). Weakness: CWE-825. 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 8.
High [CVE-2026-32710] Remote Code Execution or Denial of Service via JSON_SCHEMA_VALID() function vulnerability
Remote Code Execution or Denial of Service via JSON_SCHEMA_VALID() function vulnerability. Red Hat rates this moderate (CVSS 7.5). Weakness: CWE-120. Affected package(s): mariadb11.8, galera, mariadb:11.8. Resolved in Red Hat advisory RHSA-2026:19182 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux 1.
High [CVE-2026-4519] Command-line option injection in webbrowser.open() via crafted URLs
Command-line option injection in webbrowser.open() via crafted URLs. Red Hat rates this important (CVSS 7.1). Weakness: CWE-88. Affected package(s): python3.11, rhpam, discovery/discovery-server-rhel9:1775668717, python3.9, python3.12, rhaiis/vllm-cuda-rhel9:1778274666. Resolved in Red Hat advisory RHSA-2026:10140 — 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 6 Extended Lifecycle Support - EXTENSION; Red Hat Enterprise Linux 7 Extended Lifecycle Support; Red Hat Enterprise Linux 8.2 Advanced Update Support; and 18 more.
High [CVE-2026-32305] mTLS bypass allows unauthorized service access via fragmented ClientHello.
mTLS bypass allows unauthorized service access via fragmented ClientHello.. Red Hat rates this important (CVSS 8.3). Weakness: CWE-179. Affected package(s): devspaces/traefik-rhel9:1779786779, devspaces/traefik-rhel9:1776718585. 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 3.27; Red Hat OpenShift Dev Spaces 3.28; Red Hat OpenShift GitOps.
High [CVE-2026-33036] Denial of Service via XML entity expansion bypass
Denial of Service via XML entity expansion bypass. Red Hat rates this moderate (CVSS 7.5). Weakness: CWE-776. Affected package(s): odf4/ocs-client-console-rhel9:1778050558, odf4/mcg-core-rhel9:1776403991, odf4/ocs-client-rhel9-operator:1778049818, odf4/odf-cloudnative-pg-rhel9-operator:1776406131, odf4/odf-csi-addons-sidecar-rhel9:1778050048, odf4/odf-multicluster-console-rhel9:1778078096. Resolved in Red Hat advisory RHSA-2026:7110 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux.
High [CVE-2026-32875] Denial of Service via large indent parameter in JSON serialization
Denial of Service via large indent parameter in JSON serialization. Red Hat rates this important (CVSS 7.5). 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-2026-32874] Denial of Service due to memory leak when parsing large integers
Denial of Service due to memory leak when parsing large integers. Red Hat rates this important (CVSS 7.5). Weakness: CWE-772. 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-2026-23536] Unauthenticated Arbitrary File Read
Unauthenticated Arbitrary File Read. Red Hat rates this important (CVSS 7.5). 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 OpenShift AI (RHOAI).
High [CVE-2026-23538] Resource exhaustion via WebSocket endpoint
Resource exhaustion via WebSocket endpoint. Red Hat rates this important (CVSS 7.5). Weakness: CWE-770. 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-2026-4438] Invalid DNS hostname returned via gethostbyaddr functions
Invalid DNS hostname returned via gethostbyaddr functions. Red Hat rates this low (CVSS 4). Weakness: CWE-838. Affected package(s): glibc-main, rhui5/haproxy-rhel9:1781525671, insights-proxy/insights-proxy-container-rhel9:1780420428, glibc, rhui5/installer-rhel9:1781525693, costmanagement/costmanagement-metrics-rhel9-operator:1780946239. Resolved in Red Hat advisory RHSA-2026:19061 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux 9; Red Hat Enterprise Linux 1.
Medium [CVE-2026-4437] Incorrect DNS response parsing via crafted DNS server response
Incorrect DNS response parsing via crafted DNS server response. Red Hat rates this moderate (CVSS 6.5). Weakness: CWE-1286. Affected package(s): glibc-main, rhui5/haproxy-rhel9:1781525671, insights-proxy/insights-proxy-container-rhel9:1780420428, glibc, rhui5/installer-rhel9:1781525693, costmanagement/costmanagement-metrics-rhel9-operator:1780946239. Resolved in Red Hat advisory RHSA-2026:19061 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux 9; Red Hat Enterprise Linux 1.
Medium [CVE-2026-33022] Denial of Service via long resolver names
Denial of Service via long resolver names. Red Hat rates this moderate (CVSS 6.5). Weakness: CWE-130. Affected package(s): openshift-pipelines/pipelines-controller-rhel9:1775707731, openshift-pipelines/pipelines-operator-bundle:1776925111, openshift-pipelines/pipelines-operator-bundle:1774871390, openshift-pipelines/pipelines-controller-rhel9:1774556221. Resolved in Red Hat advisory RHSA-2026:6170 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux.
Critical [CVE-2026-30836] Unauthenticated certificate issuance via SCEP Update Request
Unauthenticated certificate issuance via SCEP Update Request. Red Hat rates this critical (CVSS 10). Weakness: CWE-306. 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.
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