Red Hat Linux Red Hat Enterprise Linux Vulnerabilities & Security Advisories
1280 advisories tracked · Red Hat Security Data API · 3 listed in the CISA Known Exploited Vulnerabilities catalog
Every row below is a published Red Hat Linux advisory that VulniPulse classified as Red Hat Enterprise Linux, with the CVEs, affected and fixed releases and exploitation status the vendor stated. Severity mix: 31 critical, 814 high, 408 medium, 27 low.
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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 Red Hat Enterprise Linux advisories
High [CVE-2026-33810] Go crypto/x509: Certificate validation bypass due to incorrect DNS constraint application
Go crypto/x509: Certificate validation bypass due to incorrect DNS constraint application. Red Hat rates this important (CVSS 8.8). Weakness: CWE-1289. Affected package(s): rhtas/client-server-rhel9:1780399582, golang1, cryostat/cryostat-storage-rhel9:4.1.1, opentelemetry-collector, hawtio-operator-container, web-terminal/web-terminal-exec-rhel9:1780425077. Resolved in Red Hat advisory RHSA-2026:28047 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Cryostat 4 on RHEL 9; RHEM 1.0 for RHEL 9; Red Hat Satellite 6.19 for RHEL 9; Red Hat Enterprise Linux AppStream EUS (v. 10.0); and 72 more.
High [CVE-2026-6846] Arbitrary code execution via malformed XCOFF object file processing
Arbitrary code execution via malformed XCOFF object file processing. Red Hat rates this important (CVSS 7.8). Weakness: CWE-122. Affected package(s): binutils-main. Resolved in Red Hat advisory RHSA-2026:33527 — 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 8; Red Hat Enterprise Linux 9; and 1 more.
High [CVE-2026-58016] integer underflow in gio/gdbusintrospection.c via "g_dbus_node_info_new_for_xml"
integer underflow in gio/gdbusintrospection.c via "g_dbus_node_info_new_for_xml". Red Hat rates this important (CVSS 7.5). Weakness: CWE-191. 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 8; Red Hat Enterprise Linux 10; Red Hat Enterprise Linux 6; Red Hat Enterprise Linux 7; and 3 more.
Critical [CVE-2026-34078] Arbitrary code execution via crafted symlinks in sandbox-expose options
Arbitrary code execution via crafted symlinks in sandbox-expose options. Red Hat rates this important (CVSS 9). Weakness: CWE-59. Affected package(s): flatpak. Resolved in Red Hat advisory RHSA-2026:21757 — 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 7 Extended Lifecycle Support; Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support; Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On; and 7 more.
Critical [CVE-2026-34582] Client authentication bypass in TLS 1.3 implementation
Client authentication bypass in TLS 1.3 implementation. Red Hat rates this important (CVSS 9.1). Weakness: CWE-166. 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 10.
Critical [CVE-2026-34580] Certificate validation bypass due to incorrect certificate matching
Certificate validation bypass due to incorrect certificate matching. Red Hat rates this important (CVSS 9.1). Weakness: CWE-295. 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 10.
Critical [CVE-2026-4631] Unauthenticated remote code execution due to SSH command-line argument injection
Unauthenticated remote code execution due to SSH command-line argument injection. Red Hat rates this critical (CVSS 9.8). Weakness: CWE-78. Affected package(s): cockpit. Resolved in Red Hat advisory RHSA-2026:7383 — 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 9.6 Extended Update Support.
High [CVE-2026-34045] Denial of Service and Information Disclosure via unauthenticated HTTP server
Denial of Service and Information Disclosure via unauthenticated HTTP server. Red Hat rates this important (CVSS 8.2). Weakness: CWE-770. Affected package(s): rh-podman-desktop. Resolved in Red Hat advisory RHSA-2026:13867 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux 10; Red Hat Build of Podman Desktop - Tech Preview.
High [CVE-2026-39363] Information disclosure via WebSocket connection bypasses access control
Information disclosure via WebSocket connection bypasses access control. Red Hat rates this important (CVSS 7.5). Weakness: CWE-1220. Affected package(s): ansible-automation-platform-tech-preview/mcp-server-rhel9:1779783248, automation-platform-ui, automation-gateway. Resolved in Red Hat advisory RHSA-2026:24866 — 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 Build of Keycloak; and 2 more.
High [CVE-2026-33816] Memory-safety vulnerability
Memory-safety vulnerability. Red Hat rates this important (CVSS 8.3). Weakness: CWE-787. Affected package(s): advanced-cluster-security/rhacs-scanner-v4-rhel8:1777986630, rhtas/updatetree-rhel9:1780053572, rhtas/createtree-rhel9:1780053572, advanced-cluster-security/rhacs-scanner-v4-rhel8:1777307791, custom-metrics-autoscaler/custom-metrics-autoscaler-rhel9-operator:1779953535, go-fdo-server. Resolved in Red Hat advisory RHSA-2026:13907 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Cryostat 4 on RHEL 9; Red Hat Enterprise Linux 10; RHEM 1.0 for RHEL 9; Red Hat Advanced Cluster Management for Kubernetes 2.15; and 16 more.
High [CVE-2026-33815] Memory-safety vulnerability
Memory-safety vulnerability. Red Hat rates this important (CVSS 8.3). Weakness: CWE-787. Affected package(s): advanced-cluster-security/rhacs-scanner-v4-rhel8:1777986630, rhtas/updatetree-rhel9:1780053572, rhtas/createtree-rhel9:1780053572, advanced-cluster-security/rhacs-scanner-v4-rhel8:1777307791, custom-metrics-autoscaler/custom-metrics-autoscaler-rhel9-operator:1779953535, rhtas/trillian-logserver-rhel9:1780053572. Resolved in Red Hat advisory RHSA-2026:24482 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Cryostat 4 on RHEL 9; RHEM 1.0 for RHEL 9; Red Hat Advanced Cluster Management for Kubernetes 2.15; Red Hat Advanced Cluster Security for Kubernetes 4.10; and 16 more.
High [CVE-2026-20911] Arbitrary Code Execution via specially crafted file
Arbitrary Code Execution via specially crafted file. Red Hat rates this important (CVSS 7.5). Weakness: CWE-120. 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 7; Red Hat Enterprise Linux 8.
High [CVE-2026-21413] Arbitrary code execution via heap-based buffer overflow in lossless JPEG loading
Arbitrary code execution via heap-based buffer overflow in lossless JPEG loading. Red Hat rates this important (CVSS 7.5). Weakness: CWE-787. Affected package(s): LibRaw. Resolved in Red Hat advisory RHSA-2026:11360 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support; Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On; Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support; Red Hat Enterprise Linux 8.6 Telecommunications Update Service; and 8 more.
High [CVE-2026-20889] Arbitrary code execution via specially crafted image file
Arbitrary code execution via specially crafted image file. Red Hat rates this important (CVSS 7.5). Weakness: CWE-120. Affected package(s): LibRaw. Resolved in Red Hat advisory RHSA-2026:13284 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support; Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On; Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support; Red Hat Enterprise Linux 8.6 Telecommunications Update Service; and 3 more.
High [CVE-2026-24660] Memory Corruption via Malicious File Processing
Memory Corruption via Malicious File Processing. Red Hat rates this important (CVSS 7.5). Weakness: CWE-120. Affected package(s): LibRaw. Resolved in Red Hat advisory RHSA-2026:13284 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support; Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On; Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support; Red Hat Enterprise Linux 8.6 Telecommunications Update Service; and 4 more.
High [CVE-2026-5734] Memory safety bugs fixed in Firefox ESR 140.9.1, Thunderbird ESR 140.9.1, Firefox 149.0.2 and Thunderbird 149.0.2
Memory safety bugs fixed in Firefox ESR 140.9.1, Thunderbird ESR 140.9.1, Firefox 149.0.2 and Thunderbird 149.0.2. Red Hat rates this important (CVSS 8.8). Weakness: CWE-787. Affected package(s): thunderbird, firefox. Resolved in Red Hat advisory RHSA-2026:11805 — 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 7 Extended Lifecycle Support; Red Hat Enterprise Linux 8.2 Advanced Update Support; Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support; and 10 more.
High [CVE-2026-5732] Incorrect boundary conditions, integer overflow in the Graphics: Text component
Incorrect boundary conditions, integer overflow in the Graphics: Text component. Red Hat rates this important (CVSS 8.8). Weakness: CWE-190. Affected package(s): thunderbird, firefox. Resolved in Red Hat advisory RHSA-2026:11805 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux 10; Red Hat Enterprise Linux 6; Red Hat Enterprise Linux 7.
High [CVE-2026-5731] Memory safety bugs fixed in Firefox ESR 115.34.1, Firefox ESR 140.9.1, Thunderbird ESR 140.9.1, Firefox 149.0.2 and Thunderbird 149.0.2
Memory safety bugs fixed in Firefox ESR 115.34.1, Firefox ESR 140.9.1, Thunderbird ESR 140.9.1, Firefox 149.0.2 and Thunderbird 149.0.2. Red Hat rates this important (CVSS 8.8). Weakness: CWE-787. Affected package(s): thunderbird, firefox. Resolved in Red Hat advisory RHSA-2026:11805 — 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 7 Extended Lifecycle Support; Red Hat Enterprise Linux 8.2 Advanced Update Support; Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support; and 10 more.
High [CVE-2026-34986] Denial of Service via crafted JSON Web Encryption (JWE) object
Denial of Service via crafted JSON Web Encryption (JWE) object. Red Hat rates this important (CVSS 7.5). Weakness: CWE-131. Affected package(s): odf4/mcg-core-rhel9:1776403991, openshift-service-mesh/pilot-rhel8:1777319850, openshift-service-mesh/istio-cni-rhel8:1777374598, odf4/odf-cloudnative-pg-rhel9-operator:1776406131, multicluster-globalhub/multicluster-globalhub-grafana-rhel9:1778867753, multicluster-engine/assisted-installer-agent-rhel9:1776351169. Resolved in Red Hat advisory RHSA-2026:25194 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Cryostat 4 on RHEL 9; Red Hat Enterprise Linux AppStream EUS (v. 10.0); Red Hat Enterprise Linux AppStream (v. 10); Red Hat Enterprise Linux AppStream (v. 8); and 81 more.
High [CVE-2026-34588] Arbitrary code execution and information disclosure via crafted EXR file
Arbitrary code execution and information disclosure via crafted EXR file. Red Hat rates this important (CVSS 8.8). Weakness: CWE-190. Affected package(s): openexr, rhaiis/model-opt-cuda-rhel9:1782352950, rhaiis/vllm-spyre-rhel9:1782352919, rhaiis/vllm-rocm-rhel9:1782353093, rhaiis/vllm-cuda-rhel9:1782352847. Resolved in Red Hat advisory RHSA-2026:15888 — 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 9.0 Update Services for SAP Solutions; Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions; Red Hat Enterprise Linux 9.4 Extended Update Support; and 2 more.