Red Hat Linux Security Advisories & CVEs
5197 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 Linux 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 Linux advisories
Critical [CVE-2026-44006] Sandbox escape via arbitrary prototype access leading to arbitrary code execution
Sandbox escape via arbitrary prototype access leading to arbitrary code execution. Red Hat rates this important (CVSS 10). Weakness: CWE-914. 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-2026-43999] Remote code execution via NodeVM builtin allowlist bypass
Remote code execution via NodeVM builtin allowlist bypass. Red Hat rates this important (CVSS 9.9). Weakness: CWE-829. 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-2026-43997] Arbitrary code execution via sandbox escape
Arbitrary code execution via sandbox escape. Red Hat rates this important (CVSS 10). Weakness: CWE-653. 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-2026-42561] Denial of Service via excessive multipart part headers
Denial of Service via excessive multipart part headers. Red Hat rates this important (CVSS 7.5). Weakness: CWE-606. 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: python-multipart; Red Hat OpenShift AI 3.3; Red Hat AI Inference Server; Red Hat Enterprise Linux AI (RHEL AI) 3; and 5 more.
High [CVE-2026-44248] Denial of Service due to excessive resource consumption from crafted MQTT 5 header
Denial of Service due to excessive resource consumption from crafted MQTT 5 header. 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 build of Apache Camel 4.18.1.P1 for Spring Boot 3.5.16; Red Hat AMQ Broker 7; Red Hat Fuse 7; Red Hat Process Automation 7; and 2 more.
High [CVE-2026-42587] Denial of Service via unbounded memory allocation in HTTP content decompression
Denial of Service via unbounded memory allocation in HTTP content decompression. Red Hat rates this important (CVSS 7.5). Weakness: CWE-770. Affected package(s): devspaces/pluginregistry-rhel9:1780696380, cryostat/jfr-datasource-rhel9:4.2.0, netty-codec-http, devspaces/openvsx-rhel9:1780948325, devspaces/server-rhel9:1780694994, cryostat/cryostat-reports-rhel9:4.2.0. Resolved in Red Hat advisory RHSA-2026:23808 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Cryostat 4 on RHEL 9; Red Hat build of Apache Camel 4.18.1.P1 for Spring Boot 3.5.16; Red Hat build of Quarkus 3.27.4; Red Hat OpenShift Dev Spaces 3.28; and 18 more.
High [CVE-2026-42584] Incorrect HTTP response parsing leads to data confusion
Incorrect HTTP response parsing leads to data confusion. Red Hat rates this important (CVSS 7.3). Weakness: CWE-444. Affected package(s): devspaces/pluginregistry-rhel9:1780696380, cryostat/jfr-datasource-rhel9:4.2.0, netty-codec-http, devspaces/openvsx-rhel9:1780948325, devspaces/server-rhel9:1780694994, cryostat/cryostat-reports-rhel9:4.2.0. Resolved in Red Hat advisory RHSA-2026:23808 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Cryostat 4 on RHEL 9; Red Hat build of Apache Camel 4.18.1.P1 for Spring Boot 3.5.16; Red Hat build of Quarkus 3.27.4; Red Hat OpenShift Dev Spaces 3.28; and 19 more.
High [CVE-2026-42583] Denial of Service via excessive memory allocation in LZ4FrameDecoder
Denial of Service via excessive memory allocation in LZ4FrameDecoder. Red Hat rates this important (CVSS 7.5). Weakness: CWE-770. Resolved in Red Hat advisory RHSA-2026:34608 — update the affected packages (`sudo dnf update`). Affected product named by the advisory: Red Hat Enterprise Linux.
High [CVE-2026-42579] High integrity impact due to improper DNS domain name constraint enforcement
High integrity impact due to improper DNS domain name constraint enforcement. Red Hat rates this important (CVSS 7.5). Weakness: CWE-1286. Affected package(s): netty-codec-dns, devspaces/pluginregistry-rhel9:1780696380, cryostat/jfr-datasource-rhel9:4.2.0, devspaces/openvsx-rhel9:1780948325, devspaces/server-rhel9:1780694994, cryostat/cryostat-reports-rhel9:4.2.0. Resolved in Red Hat advisory RHSA-2026:23808 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Cryostat 4 on RHEL 9; Red Hat build of Apache Camel 4.18.1.P1 for Spring Boot 3.5.16; Red Hat build of Quarkus 3.27.4; Red Hat OpenShift Dev Spaces 3.28; and 1 more.
High [CVE-2026-42578] HTTP Header Injection via HttpProxyHandler Disabled Validation
HTTP Header Injection via HttpProxyHandler Disabled Validation. Red Hat rates this important (CVSS 7.5). Weakness: CWE-93. Affected package(s): netty-handler-proxy, devspaces/pluginregistry-rhel9:1780696380, cryostat/jfr-datasource-rhel9:4.2.0, devspaces/openvsx-rhel9:1780948325, devspaces/server-rhel9:1780694994, cryostat/cryostat-reports-rhel9:4.2.0. Resolved in Red Hat advisory RHSA-2026:23808 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Cryostat 4 on RHEL 9; Red Hat build of Apache Camel 4.18.1.P1 for Spring Boot 3.5.16; Red Hat build of Quarkus 3.27.4; Red Hat OpenShift Dev Spaces 3.28; and 18 more.
High [CVE-2026-42581] HTTP Request Smuggling due to improper handling of conflicting HTTP/1.0 headers
HTTP Request Smuggling due to improper handling of conflicting HTTP/1.0 headers. Red Hat rates this important (CVSS 7.2). Weakness: CWE-444. Affected package(s): devspaces/pluginregistry-rhel9:1780696380, cryostat/jfr-datasource-rhel9:4.2.0, netty-codec-http, devspaces/openvsx-rhel9:1780948325, devspaces/server-rhel9:1780694994, cryostat/cryostat-reports-rhel9:4.2.0. Resolved in Red Hat advisory RHSA-2026:23808 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Cryostat 4 on RHEL 9; Red Hat build of Apache Camel 4.18.1.P1 for Spring Boot 3.5.16; Red Hat build of Quarkus 3.27.4; Red Hat OpenShift Dev Spaces 3.28; and 2 more.
High [CVE-2026-44004] Denial of Service via host memory exhaustion
Denial of Service via host memory exhaustion. Red Hat rates this important (CVSS 8.6). Weakness: CWE-1285. 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-2026-44001] Sandbox escape leads to Denial of Service
Sandbox escape leads to Denial of Service. Red Hat rates this important (CVSS 8.6). Weakness: CWE-248. 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-2026-43998] Remote code execution due to path restriction bypass via symlinks
Remote code execution due to path restriction bypass via symlinks. Red Hat rates this important (CVSS 8.5). Weakness: CWE-59. 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-2026-45109] Information disclosure via security fix bypass in middleware with Turbopack
Information disclosure via security fix bypass in middleware with Turbopack. Red Hat rates this important (CVSS 7.5). Weakness: CWE-358. Affected package(s): next. Resolved in Red Hat advisory RHSA-2026:34608 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Trusted Artifact Signer 1.4; Red Hat Enterprise Linux AI (RHEL AI) 3.
High [CVE-2026-44579] Denial of Service via crafted POST requests to server actions
Denial of Service via crafted POST requests to server actions. Red Hat rates this important (CVSS 7.5). Weakness: CWE-833. Affected package(s): next. Resolved in Red Hat advisory RHSA-2026:34608 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Trusted Artifact Signer 1.4; Red Hat Enterprise Linux AI (RHEL AI) 3.
High [CVE-2026-44578] Server-Side Request Forgery via crafted WebSocket upgrade requests
Server-Side Request Forgery via crafted WebSocket upgrade requests. Red Hat rates this important (CVSS 8.6). Weakness: CWE-918. Affected package(s): next. Resolved in Red Hat advisory RHSA-2026:34608 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Trusted Artifact Signer 1.4; Red Hat Enterprise Linux AI (RHEL AI) 3.
High [CVE-2026-44577] Denial of Service via Image Optimization API
Denial of Service via Image Optimization API. Red Hat rates this important (CVSS 7.5). Weakness: CWE-770. Affected package(s): next. Resolved in Red Hat advisory RHSA-2026:34608 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Trusted Artifact Signer 1.4; Red Hat Enterprise Linux AI (RHEL AI) 3.
High [CVE-2026-44574] Authorization bypass via crafted query parameters
Authorization bypass via crafted query parameters. Red Hat rates this important (CVSS 8.1). Weakness: CWE-551. Affected package(s): next. Resolved in Red Hat advisory RHSA-2026:34608 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Trusted Artifact Signer 1.4; Red Hat Enterprise Linux AI (RHEL AI) 3; Red Hat Trusted Artifact Signer 1.3.
High [CVE-2026-44575] Unauthorized access to protected content via middleware bypass
Unauthorized access to protected content via middleware bypass. Red Hat rates this important (CVSS 7.5). Weakness: CWE-551. Affected package(s): next. Resolved in Red Hat advisory RHSA-2026:34608 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Trusted Artifact Signer 1.4; Red Hat Enterprise Linux AI (RHEL AI) 3; Red Hat Trusted Artifact Signer 1.3.