Red Hat Linux Security Advisories & CVEs
6143 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 Red Hat 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 Red Hat advisories
Medium [CVE-2026-0636] LDAP injection vulnerability in LDAPStoreHelper.java
LDAP injection vulnerability in LDAPStoreHelper.java. Red Hat rates this important (CVSS 6.5). Weakness: CWE-90. Affected package(s): bcprov-jdk15to18, eap8-bouncycastle, devspaces/openvsx-rhel9:1779528224, bcprov-ext-jdk15on, bcprov-ext-jdk18on, devspaces/pluginregistry-rhel9:1779359423. Resolved in Red Hat advisory RHSA-2026:14276 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat build of Apache Camel 4.18.1 for Spring Boot 3.5.14; Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 8; Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 9; Red Hat OpenShift Dev Spaces 3.28; and 24 more.
Medium [CVE-2026-6313] Insufficient policy enforcement in CORS
Insufficient policy enforcement in CORS. Red Hat rates this important (CVSS 6.8). 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-2026-6312] Insufficient policy enforcement in Passwords
Insufficient policy enforcement in Passwords. Red Hat rates this important (CVSS 6.8). 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-2026-5713] 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-2026-35469] 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.
Medium [CVE-2026-40386] Denial of Service and information disclosure via integer underflow in MakerNote decoding
Denial of Service and information disclosure via integer underflow in MakerNote decoding. Red Hat rates this moderate (CVSS 4). Weakness: CWE-191. Affected package(s): libexif. Resolved in Red Hat advisory RHSA-2026:26276 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux 9; Red Hat Enterprise Linux 8; Red Hat Enterprise Linux 7; Red Hat Enterprise Linux 1.
Medium [CVE-2026-40385] Information disclosure and crashes via integer overflow in Nikon MakerNote handling
Information disclosure and crashes via integer overflow in Nikon MakerNote handling. Red Hat rates this moderate (CVSS 4). Weakness: CWE-190. Affected package(s): libexif. Resolved in Red Hat advisory RHSA-2026:26276 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux 9; Red Hat Enterprise Linux 8; Red Hat Enterprise Linux 7.
Medium [CVE-2026-3446] Python base64: Incomplete data decoding due to premature stop at padding
Python base64: Incomplete data decoding due to premature stop at padding. Red Hat rates this moderate (CVSS 5.3). Weakness: CWE-1286. Affected package(s): python3. Resolved in Red Hat advisory RHSA-2026:10118 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux.
Medium [CVE-2026-1502] HTTP header injection via CR/LF in proxy tunnel headers
HTTP header injection via CR/LF in proxy tunnel headers. Red Hat rates this moderate (CVSS 4.5). Weakness: CWE-93. Affected package(s): python3, python3.12, python3.14, rhui5/rhua-rhel9:1779798222, rhui5/installer-rhel9:1779798165. 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; Red Hat Enterprise Linux 8.
Medium [CVE-2026-34481] Denial of Service via invalid JSON output
Denial of Service via invalid JSON output. Red Hat rates this moderate (CVSS 6.5). Weakness: CWE-241. Affected package(s): log4j-layout-template-json, offline-knowledge-portal/rhokp-rhel9:1779996999. Resolved in Red Hat advisory RHSA-2026:22619 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux.
Medium [CVE-2026-34480] Invalid XML output causes denial of service in logging
Invalid XML output causes denial of service in logging. Red Hat rates this moderate (CVSS 5.3). Weakness: CWE-168. Affected package(s): log4j-core-test, offline-knowledge-portal/rhokp-rhel9:1779996999, log4j-core. Resolved in Red Hat advisory RHSA-2026:22619 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux.
Medium [CVE-2026-34479] Apache Log4j 1-to-Log4j 2 bridge: Log processing denial of service due to improper XML escaping
Apache Log4j 1-to-Log4j 2 bridge: Log processing denial of service due to improper XML escaping. Red Hat rates this moderate (CVSS 5.3). Weakness: CWE-91. Affected package(s): offline-knowledge-portal/rhokp-rhel9:1779996999. Resolved in Red Hat advisory RHSA-2026:21773 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux.
Medium [CVE-2026-34478] Log injection via CRLF sequences due to configuration attribute renames
Log injection via CRLF sequences due to configuration attribute renames. Red Hat rates this moderate (CVSS 5.8). Weakness: CWE-93. Affected package(s): log4j-core-test, offline-knowledge-portal/rhokp-rhel9:1779996999, log4j-core. Resolved in Red Hat advisory RHSA-2026:22619 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux.
Medium [CVE-2026-34477] Man-in-the-middle attack due to incomplete hostname verification
Man-in-the-middle attack due to incomplete hostname verification. Red Hat rates this moderate (CVSS 6.8). Weakness: CWE-295. Affected package(s): offline-knowledge-portal/rhokp-rhel9:1779996999. Resolved in Red Hat advisory RHSA-2026:21773 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux.
Medium [CVE-2026-40227] Denial of Service via malicious IPC API call with null element
Denial of Service via malicious IPC API call with null element. Red Hat rates this moderate (CVSS 5.5). Weakness: CWE-476. Affected package(s): systemd-main. Resolved in Red Hat advisory RHSA-2026:7299 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux.