Red Hat Linux Security Advisories & Vulnerabilities
16038 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
High [CVE-2026-2332] HTTP request smuggling via chunked extension quoted-string parsing
HTTP request smuggling via chunked extension quoted-string parsing. Red Hat rates this important (CVSS 7.4). Weakness: CWE-444. Affected package(s): offline-knowledge-portal/rhokp-rhel9:1779996999, devspaces/pluginregistry-rhel9:1776717247, jmc, jetty-http, devspaces/openvsx-rhel9:1776716842. Resolved in Red Hat advisory RHSA-2026:25089 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux 9; Red Hat Offline Knowledge Portal 1.2.7; Red Hat OpenShift Dev Spaces 3.27; Red Hat AMQ Broker 7; and 28 more.
Medium [CVE-2026-5713] Information disclosure and arbitrary code execution via remote debugging with a malicious process.
Information disclosure and arbitrary code execution via remote debugging with a malicious process.. Red Hat rates this moderate (CVSS 6). Weakness: CWE-822. Affected package(s): python3, python3.14. Resolved in Red Hat advisory RHSA-2026:19019 — 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-2026-37980] Org.keycloak.forms.login: keycloak: keycloak: arbitrary code execution via stored cross-site scripting (xss) in organization selection login page
A flaw was found in Keycloak, specifically in the organization selection login page. A remote attacker with `manage-realm` or `manage-organizations` administrative privileges can exploit a Stored Cross-Site Scripting (XSS) vulnerability. This flaw occurs because the `organization.alias` is placed into an inline JavaScript `onclick` handler, allowing a crafted JavaScript payload to execute in a user's browser when they view the login page. Successful exploitation enables arbitrary JavaScript execution, potentially leading to session theft, unauthorized account actions, or further attacks against users of the affected realm. This vulnerability has Moderate impact. This payload executes in the context of a user's browser when the login page is viewed, potentially leading to session theft or further attacks. Red Hat severity: Moderate — CVSS 6.9 (CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:H/I:L/A:N). Weakness: CWE-79. Affected Red Hat products: Red Hat Build of Keycloak. Red Hat does not currently list a fixing RHSA for this CVE.
High [CVE-2026-40164] Denial of Service via crafted JSON object causing hash collisions
Denial of Service via crafted JSON object causing hash collisions. Red Hat rates this important (CVSS 7.5). Weakness: CWE-341. Affected package(s): rhaiis/model-opt-cuda-rhel9:1782352950, rhaiis/vllm-spyre-rhel9:1782352919, jq, rhcos, rhaiis/model-opt-cuda-rhel9:1780681984, rhaiis/vllm-rocm-rhel9:1782353093. Resolved in Red Hat advisory RHSA-2026:26542 — 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 8.4 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; and 19 more.
High [CVE-2026-39979] out-of-bounds read in jv_parse_sized() on error formatting for non-NUL-terminated buffers
out-of-bounds read in jv_parse_sized() on error formatting for non-NUL-terminated buffers. Red Hat rates this important (CVSS 8.2). Weakness: CWE-125. Affected package(s): rhaiis/model-opt-cuda-rhel9:1782352950, rhaiis/vllm-spyre-rhel9:1782352919, jq, rhcos, rhaiis/model-opt-cuda-rhel9:1780681984, rhaiis/vllm-rocm-rhel9:1782353093. Resolved in Red Hat advisory RHSA-2026:26542 — 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 8.4 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; and 21 more.
High [CVE-2026-4786] Arbitrary code execution via command injection in webbrowser.open() API
Arbitrary code execution via command injection in webbrowser.open() API. Red Hat rates this important (CVSS 7.1). Weakness: CWE-88. Affected package(s): python3.11, rhaiis/model-opt-cuda-rhel9:1782352950, rhaiis/vllm-spyre-rhel9:1782352919, rhpam, python3.9, python3.12. Resolved in Red Hat advisory RHSA-2026:35838 — 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 8.4 Advanced Mission Critical Update Support; and 16 more.
High [CVE-2026-33908] Denial of Service via deeply nested XML file processing
Denial of Service via deeply nested XML file processing. 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-2026-33901] Denial of Service due to heap buffer overflow in MVG decoder
Denial of Service due to heap buffer overflow in MVG decoder. Red Hat rates this important (CVSS 7.5). Weakness: CWE-787. 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-2026-6100] Arbitrary code execution or information disclosure via use-after-free in decompression modules
Arbitrary code execution or information disclosure via use-after-free in decompression modules. Red Hat rates this important (CVSS 8.1). Weakness: CWE-825. Affected package(s): python3.11, rhaiis/model-opt-cuda-rhel9:1782352950, rhaiis/vllm-spyre-rhel9:1782352919, rhpam, python3.9, python3.12. Resolved in Red Hat advisory RHSA-2026:26187 — 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 8.4 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; and 16 more.
High [CVE-2026-28291] Command Execution via Option-Parsing Bypass in simple-git
Command Execution via Option-Parsing Bypass in simple-git. Red Hat rates this important (CVSS 8.1). Weakness: CWE-78. 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 Build of Keycloak; Red Hat Process Automation 7.
High [CVE-2026-1462] Arbitrary Code Execution Vulnerability Bypassing Safe Mode
Arbitrary Code Execution Vulnerability Bypassing Safe Mode. Red Hat rates this important (CVSS 7.8). Weakness: CWE-502. Affected package(s): rhoai/odh-modelmesh-runtime-adapter-rhel9:1780394782. Resolved in Red Hat advisory RHSA-2026:24977 — 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; Red Hat OpenShift AI (RHOAI).
High [CVE-2026-5367] Information disclosure via crafted DHCPv6 packets
Information disclosure via crafted DHCPv6 packets. Red Hat rates this important (CVSS 8.6). Weakness: CWE-130. Affected package(s): ovn25.03, ovn25.09, ovn, ovn23.09, ovn24.03, ovn23.06. Resolved in Red Hat advisory RHSA-2026:11702 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Fast Datapath for Red Hat Enterprise Linux 10; Fast Datapath for Red Hat Enterprise Linux 8; Fast Datapath for Red Hat Enterprise Linux 9; Fast Datapath for RHEL 8; and 2 more.
High [CVE-2026-6857] Remote Code Execution via Unsafe Deserialization
Remote Code Execution via Unsafe Deserialization. Red Hat rates this important (CVSS 7.5). Weakness: CWE-502. Affected package(s): camel-infinispan. Resolved in Red Hat advisory RHSA-2026:22453 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat build of Apache Camel 4 for Quarkus 3; Red Hat Fuse 7; Red Hat JBoss Enterprise Application Platform Expansion Pack.
High [CVE-2026-31419] Linux kernel: Use-after-free in bonding driver leads to denial of service
Linux kernel: Use-after-free in bonding driver leads to denial of service. Red Hat rates this important (CVSS 7). Weakness: CWE-416. Affected package(s): kernel, kernel-rt. Resolved in Red Hat advisory RHSA-2026:27354 — 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 8.8 Telecommunications Update Service; Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions; Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions; and 2 more.
Medium [CVE-2026-35469] Kubelet, CRI-O, kube-apiserver: Denial of Service via SPDY streaming code
Kubelet, CRI-O, kube-apiserver: Denial of Service via SPDY streaming code. Red Hat rates this important (CVSS 6.5). Weakness: CWE-770. Affected package(s): openshift4/ose-node-feature-discovery-rhel9:1779252023, openshift4/ose-sriov-network-config-daemon:1780955979, container-native-virtualization/virt-exportserver-rhel9:1782358244, openshift4/ose-sriov-network-webhook-rhel9:1779249801, advanced-cluster-security/rhacs-roxctl-rhel8:1777986630, multicluster-engine/assisted-service. Resolved in Red Hat advisory RHSA-2026:29795 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: RHEM 1.0 for RHEL 9; Red Hat OpenShift Container Platform 4.19; Red Hat Advanced Cluster Management for Kubernetes 2.13; Red Hat Advanced Cluster Security for Kubernetes 4.10; and 32 more.
Medium [CVE-2026-39956] missing runtime type checks for _strindices lead to crash and limited memory disclosure
missing runtime type checks for _strindices lead to crash and limited memory disclosure. Red Hat rates this moderate (CVSS 6.1). Weakness: CWE-1287. Affected package(s): jq-main. Resolved in Red Hat advisory RHSA-2026:8579 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux.
Medium [CVE-2026-33947] unbounded Recursion in jv_setpath() / jv_getpath() / delpaths_sorted()
unbounded Recursion in jv_setpath() / jv_getpath() / delpaths_sorted(). Red Hat rates this moderate (CVSS 6.2). Weakness: CWE-674. Affected package(s): jq-main. Resolved in Red Hat advisory RHSA-2026:8579 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux.
Medium [CVE-2026-32316] Denial of Service or potential arbitrary code execution due to integer overflow and heap-based buffer overflow
Denial of Service or potential arbitrary code execution due to integer overflow and heap-based buffer overflow. Red Hat rates this moderate (CVSS 6.8). Weakness: CWE-190. Affected package(s): jq-main. Resolved in Red Hat advisory RHSA-2026:8579 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux.
Medium [CVE-2026-33555] Request smuggling via HTTP/3 parser desynchronization
Request smuggling via HTTP/3 parser desynchronization. Red Hat rates this moderate (CVSS 4). Weakness: CWE-130. Affected package(s): haproxy-main. Resolved in Red Hat advisory RHSA-2026:8749 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux.
Medium [CVE-2026-6845] Denial of Service via crafted ELF file
Denial of Service via crafted ELF file. Red Hat rates this moderate (CVSS 5). Weakness: CWE-476. Affected package(s): binutils-main. Resolved in Red Hat advisory RHSA-2026:34924 — 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 6; Red Hat Enterprise Linux 7; and 3 more.
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