Red Hat Linux Security Advisories & CVEs
4891 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
High [CVE-2026-42154] Denial of Service via uncontrolled memory allocation in remote read endpoint
Denial of Service via uncontrolled memory allocation in remote read endpoint. Red Hat rates this important (CVSS 7.5). Weakness: CWE-770. Affected package(s): opentelemetry-collector, jaeger-main, rhacm2/prometheus-rhel9:1782374537, opentelemetry-collector-main, openshift-logging/logging-loki-rhel9:1782405469, opentelemetry-collector-contrib-main. Resolved in Red Hat advisory RHSA-2026:29770 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: RHEM 1.0 for RHEL 9; Red Hat Enterprise Linux AppStream (v. 10); Red Hat Enterprise Linux AppStream (v. 9); Logging Subsystem for Red Hat OpenShift 6.4; and 50 more.
High [CVE-2026-42151] Information disclosure of Azure OAuth client secret via config API
Information disclosure of Azure OAuth client secret via config API. Red Hat rates this important (CVSS 7.5). Weakness: CWE-256. Affected package(s): opentelemetry-collector, opentelemetry-collector-contrib-main, jaeger-main, opentelemetry-collector-main. Resolved in Red Hat advisory RHSA-2026:25504 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: RHEM 1.0 for RHEL 9; Red Hat Enterprise Linux AppStream (v. 10); Red Hat Enterprise Linux AppStream (v. 9); Red Hat Edge Manager 1.0; and 49 more.
High [CVE-2026-43964] buffer over-read via malformed enhanced status code
buffer over-read via malformed enhanced status code. Red Hat rates this important (CVSS 7.5). Weakness: CWE-193. Affected package(s): postfix. Resolved in Red Hat advisory RHSA-2026:25932 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux 9; Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support; Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On; Red Hat Enterprise Linux 8.8 Telecommunications Update Service; and 5 more.
High [CVE-2026-29004] Arbitrary Code Execution via DHCPv6 Client Heap Buffer Overflow
Arbitrary Code Execution via DHCPv6 Client Heap Buffer Overflow. Red Hat rates this important (CVSS 8.8). Weakness: CWE-131. Affected package(s): busybox-main. Resolved in Red Hat advisory RHSA-2026:30652 — update the affected packages (`sudo dnf update`). Affected product named by the advisory: Red Hat Hardened Images.
High [CVE-2026-40682] XML External Entity (XXE) vulnerability via crafted dictionary parsing
XML External Entity (XXE) vulnerability via crafted dictionary parsing. Red Hat rates this important (CVSS 7.5). Weakness: CWE-611. 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 AI (RHOAI).
High [CVE-2026-42027] Arbitrary Class Loading via Model Manifest
Arbitrary Class Loading via Model Manifest. Red Hat rates this important (CVSS 7.5). Weakness: CWE-502. 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 Fuse 7; Red Hat OpenShift AI (RHOAI); Red Hat OpenShift AI 2.25.
High [CVE-2026-42440] Denial of Service via unbounded array allocation in crafted model files
Denial of Service via unbounded array allocation in crafted model files. 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 Fuse 7; Red Hat JBoss Enterprise Application Platform Expansion Pack.
High [CVE-2026-24781] Arbitrary code execution via sandbox breakout through inspect function
Arbitrary code execution via sandbox breakout through inspect function. Red Hat rates this important (CVSS 8.1). Weakness: CWE-653. Affected package(s): rhdh/rhdh-hub-rhel9:1781187342. Resolved in Red Hat advisory RHSA-2026:26234 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Developer Hub 1.10; Red Hat Developer Hub 1.9.
High [CVE-2026-29169] NULL pointer dereference via specially crafted request
NULL pointer dereference via specially crafted request. Red Hat rates this low (CVSS 7.5). Weakness: CWE-476. Affected package(s): jbcs-httpd24-httpd, httpd, httpd-main, mod_dav_lock.so. Resolved in Red Hat advisory RHSA-2026:27200 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux 8; Red Hat Enterprise Linux 1; Red Hat Enterprise Linux 7.
High [CVE-2026-23918] Remote Code Execution via Double Free in HTTP/2 Protocol
Remote Code Execution via Double Free in HTTP/2 Protocol. Red Hat rates this important (CVSS 8.8). Weakness: CWE-1341. Affected package(s): httpd-main. Resolved in Red Hat advisory RHSA-2026:13938 — update the affected packages (`sudo dnf update`). Affected product named by the advisory: Red Hat Hardened Images.
High [CVE-2026-6266] Account hijacking and unauthorized access via unverified email linking
Account hijacking and unauthorized access via unverified email linking. Red Hat rates this important (CVSS 8.3). Weakness: CWE-305. Affected package(s): automation-gateway, automation-controller, python3.12-django-ansible-base, ansible-automation-platform. Resolved in Red Hat advisory RHSA-2026:13508 — 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.
High [CVE-2026-33857] off-by-one out-of-bounds reads in AJP getter functions
off-by-one out-of-bounds reads in AJP getter functions. Red Hat rates this moderate (CVSS 7.5). Weakness: CWE-125. Affected package(s): httpd, httpd:2.4, jbcs-httpd24-httpd, httpd-main, mod_proxy_ajp.so. Resolved in Red Hat advisory RHSA-2026:27200 — 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 1; Red Hat Enterprise Linux 7.
High [CVE-2026-34032] heap-based buffer over-read due to missing null-termination check
heap-based buffer over-read due to missing null-termination check. Red Hat rates this moderate (CVSS 8.2). Weakness: CWE-170. Affected package(s): httpd, httpd:2.4, jbcs-httpd24-httpd, httpd-main, mod_proxy_ajp.so. Resolved in Red Hat advisory RHSA-2026:27200 — 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 1; Red Hat Enterprise Linux 7.
High [CVE-2026-34059] heap-based buffer over-read and memory disclosure in ajp_parse_data()
heap-based buffer over-read and memory disclosure in ajp_parse_data(). Red Hat rates this moderate (CVSS 8.2). Weakness: CWE-126. Affected package(s): httpd, httpd:2.4, jbcs-httpd24-httpd, httpd-main, mod_proxy_ajp.so. Resolved in Red Hat advisory RHSA-2026:27200 — 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 1; Red Hat Enterprise Linux 7.
High [CVE-2026-33846] Denial of Service via heap buffer overflow in DTLS handshake fragment reassembly
Denial of Service via heap buffer overflow in DTLS handshake fragment reassembly. Red Hat rates this important (CVSS 7.5). Weakness: CWE-130. Affected package(s): rhui5/installer-rhel9:1781525693, libtasn1, gnutls, rhui5/cds-rhel9:1781525684, discovery/discovery-ui-rhel9:1782166952, discovery/discovery-server-rhel9:1782159791. Resolved in Red Hat advisory RHSA-2026:29197 — 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 48 more.
High [CVE-2026-7737] osrg GoBGP: Denial of service via out-of-bounds read in BMP Parser
osrg GoBGP: Denial of service via out-of-bounds read in BMP Parser. Red Hat rates this important (CVSS 7.5). Weakness: CWE-125. 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-2026-7736] osrg GoBGP: Integer underflow via manipulation in parseRibEntry function
osrg GoBGP: Integer underflow via manipulation in parseRibEntry function. 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 product named by the advisory: Red Hat Enterprise Linux.
High [CVE-2026-39852] io.quarkus:quarkus-vertx-http: io.quarkus:quarkus-vertx-http: Authorization bypass via semicolons in HTTP requests
io.quarkus:quarkus-vertx-http: io.quarkus:quarkus-vertx-http: Authorization bypass via semicolons in HTTP requests. Red Hat rates this important (CVSS 8.2). Weakness: CWE-551. Affected package(s): cryostat/jfr-datasource-rhel9:4.2.0, quarkus-vertx-http, cryostat/cryostat-reports-rhel9:4.2.0, cryostat/cryostat-rhel9:4.2.0. Resolved in Red Hat advisory RHSA-2026:25089 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Cryostat 4 on RHEL 9; Red Hat Build of Apache Camel 4.14 for Quarkus 3.27; Red Hat build of Quarkus 3.20.6.SP1; OpenShift Serverless; and 8 more.
High [CVE-2025-70069] Denial of Service via FBXConverter.cpp and ConvertMeshMultiMaterial() method
Denial of Service via FBXConverter.cpp and ConvertMeshMultiMaterial() method. Red Hat rates this important (CVSS 7.5). Weakness: CWE-1284. 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-2025-70071] Denial of Service via FBXParser.cpp ParseVectorDataArray() function
Denial of Service via FBXParser.cpp ParseVectorDataArray() function. Red Hat rates this important (CVSS 7.5). Weakness: CWE-1284. 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.