Red Hat Linux Security Advisories & Vulnerabilities
16040 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
Medium [CVE-2026-20691] A maliciously crafted webpage may be able to fingerprint the user
A maliciously crafted webpage may be able to fingerprint the user. Red Hat rates this moderate (CVSS 4.3). Weakness: CWE-497. 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.
Medium [CVE-2026-28861] A malicious website may be able to access script message handlers intended for other origins
A malicious website may be able to access script message handlers intended for other origins. Red Hat rates this important (CVSS 4.3). Weakness: CWE-346. 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-2026-28871] 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 2 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 2 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; Red Hat Developer Hub.
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 26 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.
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