Red Hat Linux Security Advisories & CVEs
5197 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 Linux 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 Linux advisories
High [CVE-2026-44573] Information disclosure due to middleware bypass in Pages Router with i18n
Information disclosure due to middleware bypass in Pages Router with i18n. Red Hat rates this important (CVSS 7.5). Weakness: CWE-551. Affected package(s): next. Resolved in Red Hat advisory RHSA-2026:34608 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Trusted Artifact Signer 1.4; Red Hat Enterprise Linux AI (RHEL AI) 3; Red Hat Trusted Artifact Signer 1.3.
High [CVE-2026-44432] Denial of Service due to excessive HTTP response decompression
Denial of Service due to excessive HTTP response decompression. Red Hat rates this important (CVSS 7.5). Weakness: CWE-409. Affected package(s): rhaiis/model-opt-cuda-rhel9:1782352950, rhaiis/vllm-spyre-rhel9:1782352919, satellite/iop-yuptoo-rhel9:1782380482, satellite/iop-insights-engine-rhel9:1782448455, quay/quay-rhel8:1781878070, satellite/iop-puptoo-rhel9:1779792651. Resolved in Red Hat advisory RHSA-2026:24483 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Ansible Automation Platform 2.6 for RHEL 9; Red Hat Enterprise Linux 10; Red Hat Enterprise Linux 8; Red Hat Enterprise Linux 9; and 24 more.
High [CVE-2026-42266] Arbitrary code execution due to improper enforcement of extension allow-list
Arbitrary code execution due to improper enforcement of extension allow-list. Red Hat rates this important (CVSS 8.8). Weakness: CWE-88. 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 OpenShift AI (RHOAI); Red Hat Migration Toolkit for Applications 8.2.
High [CVE-2026-42557] Arbitrary code execution via deceptive button in HTML output
Arbitrary code execution via deceptive button in HTML output. Red Hat rates this important (CVSS 8.8). Weakness: CWE-79. 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 OpenShift AI (RHOAI); Red Hat Migration Toolkit for Applications 8.2.
High [CVE-2026-45740] Denial of Service via crafted JSON descriptors
Denial of Service via crafted JSON descriptors. Red Hat rates this important (CVSS 7.5). Weakness: CWE-776. 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-2026-44293] Arbitrary code execution due to unsafe expression generation from crafted protobuf descriptors
Arbitrary code execution due to unsafe expression generation from crafted protobuf descriptors. Red Hat rates this important (CVSS 7.1). Weakness: CWE-94. Affected package(s): automation-platform-ui, rhdh/rhdh-hub-rhel9:1781187342, openshift-service-mesh/kiali-ossmc-rhel9:1780997382, ansible-automation-platform, openshift4/ose-console-rhel9:1782224390, openshift-service-mesh/kiali-rhel9:1780997438. Resolved in Red Hat advisory RHSA-2026:34160 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Ansible Automation Platform 2.6 for RHEL 9; Red Hat Enterprise Linux Extensions Channel (v. 10); Red Hat Developer Hub 1.9; Red Hat OpenShift Container Platform 4.21; and 9 more.
High [CVE-2026-44292] Data integrity impact due to prototype pollution
Data integrity impact due to prototype pollution. Red Hat rates this important (CVSS 7.5). Weakness: CWE-915. 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-2026-44291] Arbitrary Code Execution via prototype pollution
Arbitrary Code Execution via prototype pollution. Red Hat rates this important (CVSS 8.1). Weakness: CWE-94. 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-2026-44290] Denial of Service via crafted schema
Denial of Service via crafted schema. Red Hat rates this important (CVSS 7.5). Weakness: CWE-915. 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-2026-44289] Denial of Service via uncontrolled recursion in protobuf decoding
Denial of Service via uncontrolled recursion in protobuf decoding. Red Hat rates this important (CVSS 7.5). Weakness: CWE-606. 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: OpenShift Pipelines; Red Hat Build of Podman Desktop; Red Hat Ceph Storage 9; Red Hat Enterprise Linux 8; and 4 more.
High [CVE-2026-42945] Arbitrary Code Execution Vulnerability
Arbitrary Code Execution Vulnerability. Red Hat rates this critical (CVSS 8.1). Weakness: CWE-131. Affected package(s): odf4/ocs-client-console-rhel9:1779881302, satellite/iop-gateway-rhel9:1779706797, nginx, odf4/ocs-client-console-rhel9:1779879463, odf4/ocs-client-console-rhel9:1779972138, odf4/odf-console-rhel9:1779952279. Resolved in Red Hat advisory RHSA-2026:19371 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: NGINX Plus; NGINX Open Source; Red Hat Enterprise Linux 10.0 Extended Update Support; Red Hat Enterprise Linux 8; and 17 more.
High [CVE-2026-46300] "Fragnesia" is a variant of Dirty Frag vulnerability in the ESP/XFRM leading to Local Privilege Escalation (LPE) vulnerability in the Linux kernel
"Fragnesia" is a variant of Dirty Frag vulnerability in the ESP/XFRM leading to Local Privilege Escalation (LPE) vulnerability in the Linux kernel. Red Hat rates this important (CVSS 7.8). Weakness: CWE-123. Affected package(s): rhcos, kernel-rt, kernel, openshift, kpatch-patch. Resolved in Red Hat advisory RHSA-2026:23470 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: NVIDIA for RHEL 10; Red Hat OpenShift Container Platform 4.21; Red Hat OpenShift Container Platform 4.12; Red Hat OpenShift Container Platform 4.13; and 64 more.
Medium [CVE-2026-44431] Information disclosure via cross-origin redirects forwarding sensitive headers
Information disclosure via cross-origin redirects forwarding sensitive headers. Red Hat rates this moderate (CVSS 5.9). Weakness: CWE-201. Affected package(s): rhaiis/model-opt-cuda-rhel9:1782352950, rhaiis/vllm-spyre-rhel9:1782352919, satellite/iop-yuptoo-rhel9:1782380482, satellite/iop-insights-engine-rhel9:1782448455, satellite/iop-host-inventory-rhel9:1780414237, satellite/iop-puptoo-rhel9:1779792651. Resolved in Red Hat advisory RHSA-2026:26221 — 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.
Medium [CVE-2026-40460] Authorization bypass via IP spoofing in HTTP/3 QUIC module
Authorization bypass via IP spoofing in HTTP/3 QUIC module. Red Hat rates this moderate (CVSS 6.5). Weakness: CWE-290. Affected package(s): nginx-main. Resolved in Red Hat advisory RHSA-2026:20351 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux.
Medium [CVE-2026-7168] Information disclosure via incorrect Proxy-Authorization header reuse
Information disclosure via incorrect Proxy-Authorization header reuse. Red Hat rates this moderate (CVSS 5.3). Weakness: CWE-201. Affected package(s): curl-main. Resolved in Red Hat advisory RHSA-2026:19106 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux.
High [CVE-2026-44222] Denial of Service via malformed multimodal input or token injection
Denial of Service via malformed multimodal input or token injection. Red Hat rates this important (CVSS 7.5). Weakness: CWE-1285. 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-2026-42338] Cross-site scripting via improper HTML escaping of untrusted input
Cross-site scripting via improper HTML escaping of untrusted input. Red Hat rates this important (CVSS 8.1). Weakness: CWE-79. Affected package(s): openshift-service-mesh/kiali-ossmc-rhel9:1782201851, openshift-service-mesh/kiali-ossmc-rhel9:1782231869, nodejs24, nodejs22, openshift-service-mesh/kiali-ossmc-rhel9:1782201894, openshift-service-mesh/kiali-ossmc-rhel9:1782201696. Resolved in Red Hat advisory RHSA-2026:33160 — 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 Ansible Automation Platform 2.6; Red Hat Developer Hub 1.10; and 22 more.
High [CVE-2026-42899] .NET: infinite loop allows an attacker to cause a denial of service
.NET: infinite loop allows an attacker to cause a denial of service. Red Hat rates this important (CVSS 7.5). Weakness: CWE-835. Affected package(s): dotnet10.0, dotnet9.0, dotnet8.0, dotnet8, dotnet9, dotnet10. Resolved in Red Hat advisory RHSA-2026:21291 — 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 Update Services for SAP Solutions; Red Hat Enterprise Linux 9.6 Extended Update Support; and 1 more.
High [CVE-2026-35433] .NET: improper input validation allows an attacker to elevate privileges locally
.NET: improper input validation allows an attacker to elevate privileges locally. Red Hat rates this important (CVSS 7.3). Weakness: CWE-20. 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-2026-32177] .NET: heap-based buffer overflow allows an attacker to elevate privileges locally
.NET: heap-based buffer overflow allows an attacker to elevate privileges locally. Red Hat rates this important (CVSS 7.3). Weakness: CWE-122. 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.