Red Hat Linux Security Advisories & CVEs
5207 advisories tracked · Red Hat Security Data API · direct feeds checked every minute; rate-limited backstops use a safe source cadence
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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
Medium [CVE-2026-28871] Visiting a maliciously crafted website may lead to a cross-site scripting attack
Visiting a maliciously crafted website may lead to a cross-site scripting attack. Red Hat rates this moderate (CVSS 4.3). Weakness: CWE-79. Affected package(s): webkit2gtk3, webkitgtk4. Resolved in Red Hat advisory RHSA-2026:19206 — 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.
Critical [CVE-2026-33937] Remote Code Execution via crafted Abstract Syntax Tree object in compile()
Remote Code Execution via crafted Abstract Syntax Tree object in compile(). Red Hat rates this important (CVSS 9.8). Weakness: CWE-94. Affected package(s): cluster-observability-operator/logging-console-plugin-pf4-rhel9:1782839279, cluster-observability-operator/troubleshooting-panel-console-plugin-pf6-rhel9:1782839996, cluster-observability-operator/logging-console-plugin-pf5-rhel9:1782840539, devspaces/code-rhel9:1776744110. Resolved in Red Hat advisory RHSA-2026:34342 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat OpenShift Dev Spaces 3.27; Logging Subsystem for Red Hat OpenShift; Red Hat Enterprise Linux 10; Red Hat Enterprise Linux 8; and 1 more.
Critical [CVE-2026-27876] Remote arbitrary code execution via chained SQL Expressions and Enterprise plugin attack
Remote arbitrary code execution via chained SQL Expressions and Enterprise plugin attack. Red Hat rates this critical (CVSS 9.1). Weakness: CWE-89. 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.
Critical [CVE-2026-33758] reflected XSS in OpenBao OIDC authentication error message
reflected XSS in OpenBao OIDC authentication error message. Red Hat rates this important (CVSS 9.6). Weakness: CWE-79. 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.
Critical [CVE-2026-33757] lack of user confirmation for OpenBao OIDC direct callback mode
lack of user confirmation for OpenBao OIDC direct callback mode. Red Hat rates this important (CVSS 9.6). Weakness: CWE-384. 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-2026-34226] Information disclosure via incorrect cookie handling in fetch requests
Information disclosure via incorrect cookie handling in fetch requests. Red Hat rates this important (CVSS 7.5). 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 Ansible Automation Platform 2.
High [CVE-2026-33943] Remote Code Execution via JavaScript expression injection
Remote Code Execution via JavaScript expression injection. Red Hat rates this important (CVSS 8.8). Weakness: CWE-917. 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 Container Platform 4.
High [CVE-2026-33941] Arbitrary code execution via CLI precompiler input sanitization flaw
Arbitrary code execution via CLI precompiler input sanitization flaw. Red Hat rates this important (CVSS 8.2). Weakness: CWE-94. Affected package(s): cluster-observability-operator/logging-console-plugin-pf4-rhel9:1782839279, cluster-observability-operator/troubleshooting-panel-console-plugin-pf6-rhel9:1782839996, cluster-observability-operator/logging-console-plugin-pf5-rhel9:1782840539, devspaces/code-rhel9:1776744110. Resolved in Red Hat advisory RHSA-2026:34342 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat OpenShift Dev Spaces 3.27; Logging Subsystem for Red Hat OpenShift; Red Hat Enterprise Linux 10; Red Hat Enterprise Linux 8; and 1 more.
High [CVE-2026-33940] Arbitrary code execution via crafted template context
Arbitrary code execution via crafted template context. Red Hat rates this important (CVSS 8.1). Weakness: CWE-94. Affected package(s): cluster-observability-operator/logging-console-plugin-pf4-rhel9:1782839279, cluster-observability-operator/troubleshooting-panel-console-plugin-pf6-rhel9:1782839996, cluster-observability-operator/logging-console-plugin-pf5-rhel9:1782840539, devspaces/code-rhel9:1776744110. Resolved in Red Hat advisory RHSA-2026:34342 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat OpenShift Dev Spaces 3.27; Logging Subsystem for Red Hat OpenShift; Red Hat Enterprise Linux 10; Red Hat Enterprise Linux 8; and 1 more.
High [CVE-2026-33939] Denial of Service via malformed decorator syntax in template compilation
Denial of Service via malformed decorator syntax in template compilation. Red Hat rates this important (CVSS 7.5). Weakness: CWE-248. Affected package(s): cluster-observability-operator/logging-console-plugin-pf4-rhel9:1782839279, cluster-observability-operator/troubleshooting-panel-console-plugin-pf6-rhel9:1782839996, cluster-observability-operator/logging-console-plugin-pf5-rhel9:1782840539, devspaces/code-rhel9:1776744110. Resolved in Red Hat advisory RHSA-2026:34342 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat OpenShift Dev Spaces 3.27; Logging Subsystem for Red Hat OpenShift; Red Hat Enterprise Linux 8; Red Hat Enterprise Linux 9.
High [CVE-2026-33938] Arbitrary code execution via @partial-block overwrite
Arbitrary code execution via @partial-block overwrite. Red Hat rates this important (CVSS 8.1). Weakness: CWE-917. Affected package(s): cluster-observability-operator/logging-console-plugin-pf4-rhel9:1782839279, cluster-observability-operator/troubleshooting-panel-console-plugin-pf6-rhel9:1782839996, cluster-observability-operator/logging-console-plugin-pf5-rhel9:1782840539, devspaces/code-rhel9:1776744110. Resolved in Red Hat advisory RHSA-2026:34342 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat OpenShift Dev Spaces 3.27; Logging Subsystem for Red Hat OpenShift; Red Hat Enterprise Linux 8.
High [CVE-2026-33896] Forge (node-forge): Certificate validation bypass allows unauthorized certificate issuance
Forge (node-forge): Certificate validation bypass allows unauthorized certificate issuance. Red Hat rates this important (CVSS 7.4). Weakness: CWE-295. Affected package(s): rhdh/rhdh-hub-rhel9:1777903262, cluster-observability-operator/logging-console-plugin-pf4-rhel9:1782839279, automation-gateway, 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 Ansible Automation Platform 2.5 for RHEL 8; Red Hat Ansible Automation Platform 2.5 for RHEL 9; Red Hat Developer Hub 1.8; Red Hat Developer Hub 1.9; and 8 more.
High [CVE-2026-33895] Authentication bypass via forged Ed25519 cryptographic signatures
Authentication bypass via forged Ed25519 cryptographic signatures. Red Hat rates this important (CVSS 7.5). Weakness: CWE-347. Affected package(s): rhdh/rhdh-hub-rhel9:1777903262, cluster-observability-operator/logging-console-plugin-pf4-rhel9:1782839279, automation-gateway, 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 Ansible Automation Platform 2.5 for RHEL 8; Red Hat Ansible Automation Platform 2.5 for RHEL 9; Red Hat Developer Hub 1.8; Red Hat Developer Hub 1.9; and 6 more.
High [CVE-2026-33894] Signature Forgery via Weak RSASSA PKCS#1 v1.5 Verification
Signature Forgery via Weak RSASSA PKCS#1 v1.5 Verification. Red Hat rates this important (CVSS 7.5). Weakness: CWE-347. Affected package(s): quay/quay-rhel9:1779922205, quay/quay-rhel8:1779811473, rhdh/rhdh-hub-rhel9:1777903262, quay/quay-rhel8:1779689392, cluster-observability-operator/logging-console-plugin-pf4-rhel9:1782839279, quay/quay-rhel8:1779822261. Resolved in Red Hat advisory RHSA-2026:23361 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Ansible Automation Platform 2.5 for RHEL 8; Red Hat Ansible Automation Platform 2.5 for RHEL 9; Red Hat Developer Hub 1.8; Red Hat Developer Hub 1.9; and 13 more.
High [CVE-2026-33891] Denial of Service via infinite loop in BigInteger.modInverse()
Denial of Service via infinite loop in BigInteger.modInverse(). Red Hat rates this important (CVSS 7.5). Weakness: CWE-606. Affected package(s): rhdh/rhdh-hub-rhel9:1777903262, cluster-observability-operator/logging-console-plugin-pf4-rhel9:1782839279, automation-platform-ui, automation-gateway, 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 Ansible Automation Platform 2.5 for RHEL 8; Red Hat Ansible Automation Platform 2.5 for RHEL 9; Red Hat Ansible Automation Platform 2.6 for RHEL 9; Red Hat Developer Hub 1.8; and 6 more.
High [CVE-2026-33871] Denial of Service via HTTP/2 CONTINUATION frame flood
Denial of Service via HTTP/2 CONTINUATION frame flood. Red Hat rates this important (CVSS 7.5). Weakness: CWE-770. Affected package(s): eap8-netty-transport-native-epoll, rhoai/odh-modelmesh-rhel9:1776756834, cryostat/jfr-datasource-rhel9:4.2.0, netty-codec-http, eap8-netty, cryostat/cryostat-rhel9:4.2.0. Resolved in Red Hat advisory RHSA-2026:8509 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Cryostat 4 on RHEL 9; Red Hat AMQ Broker 7.12.7; Red Hat AMQ Broker 7.13.5; Red Hat AMQ Broker 7.14.0; and 27 more.
High [CVE-2026-33870] Request smuggling via incorrect parsing of HTTP/1.1 chunked transfer encoding extension values
Request smuggling via incorrect parsing of HTTP/1.1 chunked transfer encoding extension values. Red Hat rates this important (CVSS 7.5). Weakness: CWE-444. Affected package(s): eap8-netty-transport-native-epoll, devspaces/pluginregistry-rhel9:1776717247, netty-codec-http, rhoai/odh-modelmesh-rhel9:1776756834, cryostat/jfr-datasource-rhel9:4.2.0, devspaces/server-rhel9:1776796445. Resolved in Red Hat advisory RHSA-2026:8509 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Cryostat 4 on RHEL 9; Red Hat AMQ Broker 7.12.7; Red Hat AMQ Broker 7.13.5; Red Hat AMQ Broker 7.14.0; and 25 more.
High [CVE-2025-15381] Information disclosure and unauthorized data modification via unprotected tracing and assessment endpoints
Information disclosure and unauthorized data modification via unprotected tracing and assessment endpoints. Red Hat rates this important (CVSS 8.1). Weakness: CWE-425. 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-2026-28369] Undertow: undertow: request smuggling via malformed http request headers
A flaw was found in Undertow. When Undertow receives an HTTP request where the first header line starts with one or more spaces, it incorrectly processes the request by stripping these leading spaces. This behavior, which violates HTTP standards, can be exploited by a remote attacker to perform request smuggling. Request smuggling allows an attacker to bypass security mechanisms, access restricted information, or manipulate web caches, potentially leading to unauthorized actions or data exposure. Affected products named by the advisory: Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 8; Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 9; Red Hat build of Apache Camel for Spring Boot 4; Red Hat Data Grid 8; and 7 more. Affected products named by the advisory: Red Hat Enterprise Linux 9; Red Hat Fuse 7; Red Hat JBoss Enterprise Application Platform 7; Red Hat JBoss Enterprise Application Platform Expansion Pack; and 2 more.
High [CVE-2026-27880] Denial of Service via unbounded memory read in feature toggle evaluation
Denial of Service via unbounded memory read in feature toggle evaluation. 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 products named by the advisory: Red Hat Enterprise Linux 10; Red Hat Enterprise Linux 9.