Red Hat Linux Security Advisories & CVEs
4440 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-2026-91098] Multiple vulnerabilities allow remote code execution and privilege escalation
Multiple vulnerabilities allow remote code execution and privilege escalation. Red Hat rates this important (CVSS 8.8). Weakness: CWE-494. Affected products named by the advisory: Red Hat Enterprise Linux 10; Red Hat Enterprise Linux 6; Red Hat Enterprise Linux 7; Red Hat Enterprise Linux 8; and 2 more. Affected products named by the advisory: Red Hat Enterprise Linux 9; Red Hat package: hplip.
High [CVE-2026-86003] Unauthorized DNS record modification via unvalidated DNS updates
Unauthorized DNS record modification via unvalidated DNS updates. Red Hat rates this important (CVSS 7.5). Weakness: CWE-306. Affected products named by the advisory: Red Hat Advanced Cluster Management for Kubernetes 2; Red Hat Connectivity Link 1; Red Hat OpenShift Container Platform 4.
High [CVE-2026-91097] Multiple vulnerabilities enable remote code execution and privilege escalation
Multiple vulnerabilities enable remote code execution and privilege escalation. Red Hat rates this important (CVSS 8.8). Weakness: CWE-94. Affected products named by the advisory: Red Hat Enterprise Linux 10; Red Hat Enterprise Linux 6; Red Hat Enterprise Linux 7; Red Hat Enterprise Linux 8; and 2 more. Affected products named by the advisory: Red Hat Enterprise Linux 9; Red Hat package: hplip.
High [CVE-2026-82399] Denial of Service due to unauthenticated memory exhaustion in custom transports
Denial of Service due to unauthenticated memory exhaustion in custom transports. Red Hat rates this important (CVSS 7.5). Weakness: CWE-1050. Affected products named by the advisory: Red Hat Advanced Cluster Management for Kubernetes 2; Red Hat Connectivity Link 1; Red Hat OpenShift Container Platform 4.
High [CVE-2026-75516] RabbitMQ Java client: Denial of Service via oversized frames
RabbitMQ Java client: Denial of Service via oversized frames. Red Hat rates this important (CVSS 7.5). Weakness: CWE-770. Affected products named by the advisory: Red Hat build of Apache Camel 4 for Quarkus 3; Red Hat Fuse 7.
High [CVE-2026-46352] Denial of Service via fragmented encapsulated traffic
Denial of Service via fragmented encapsulated traffic. Red Hat rates this important (CVSS 7.5). Weakness: CWE-833.
High [CVE-2026-42784] Cryptographic integrity compromise via key flag confusion
Cryptographic integrity compromise via key flag confusion. Red Hat rates this important (CVSS 7.4). Weakness: CWE-347. Red Hat lists fixing advisory RHSA-2026:42902 with package rust-podman-sequoia-main-0.3.2-4.hum1. Affected products named by the advisory: Red Hat Hardened Images; Confidential Compute Attestation; Red Hat Ansible Automation Platform 2; Red Hat Enterprise Linux 10; and 8 more. Affected products named by the advisory: Red Hat Enterprise Linux 9; Red Hat OpenShift Container Platform 4; Red Hat Satellite 6; Red Hat Trusted Profile Analyzer.
High [CVE-2026-17526] Privilege escalation via impersonation role allows takeover of realm administrator accounts
Privilege escalation via impersonation role allows takeover of realm administrator accounts. Red Hat rates this important (CVSS 7.2). Weakness: CWE-862. Red Hat lists fixing advisory RHSA-2026:68277 with package rhbk-keycloak-rhel9/rhbk-keycloak-rhel9, rhbk/keycloak-rhel9:26.6-20, keycloak-services, rhbk-openshift-rhel9/rhbk-openshift-rhel9. Affected products named by the advisory: Red Hat build of Keycloak 26.4.16; Red Hat build of Keycloak 26.6.7.
High [CVE-2026-79651] unauthenticated DoS via unbounded locale caching
unauthenticated DoS via unbounded locale caching. Red Hat rates this important (CVSS 7.5). Weakness: CWE-400. Red Hat lists fixing advisory RHSA-2026:68277 with package rhbk/keycloak-rhel9, rhbk/keycloak-rhel9:26.6-20, keycloak-services, keycloak/rhbk-openshift-rhel9. Affected products named by the advisory: Red Hat build of Keycloak 26.4; Red Hat build of Keycloak 26.6.
High [CVE-2026-15573 +1] Incomplete fix for CVE-2026-15573 allows policy enforcer bypass via percent-encoded URI segments
Incomplete fix for CVE-2026-15573 allows policy enforcer bypass via percent-encoded URI segments. Red Hat rates this important (CVSS 8.1). Weakness: CWE-862. Red Hat lists fixing advisory RHSA-2026:68277 with package rhbk/keycloak-rhel9:26.6-20, keycloak-services, keycloak/rhbk-openshift-rhel9, rhbk/keycloak-rhel9-operator:26.6-20. Affected products named by the advisory: Red Hat build of Keycloak 26.4.16; Red Hat build of Keycloak 26.6.7.
High [CVE-2026-18212] SAML Redirect DEFLATE helpers leak native zlib state
SAML Redirect DEFLATE helpers leak native zlib state. Red Hat rates this important (CVSS 7.5). Weakness: CWE-401. Red Hat lists fixing advisory RHSA-2026:68277 with package rhbk-keycloak-rhel9/rhbk-keycloak-rhel9, rhbk/keycloak-rhel9:26.6-20, keycloak-services, rhbk-openshift-rhel9/rhbk-openshift-rhel9. Affected products named by the advisory: Red Hat build of Keycloak 26.4.16; Red Hat build of Keycloak 26.6.7; Red Hat Data Grid 8; Red Hat Single Sign-On 7.
High [CVE-2026-63127] Token impersonation via missing OAuth resource field validation
Token impersonation via missing OAuth resource field validation. Red Hat rates this important (CVSS 8.2). Weakness: CWE-289. Affected products named by the advisory: Red Hat Enterprise Linux 10; Red Hat Enterprise Linux 9; Red Hat package: goose.
High [CVE-2026-63128] Denial of Service via unauthenticated session table leak
Denial of Service via unauthenticated session table leak. Red Hat rates this important (CVSS 7.5). Weakness: CWE-772. Affected products named by the advisory: Red Hat Enterprise Linux 10; Red Hat Enterprise Linux 9; Red Hat package: goose.
High [CVE-2026-77409] RabbitMQ amqp091-go: Denial of Service due to synchronous event channel blocking
RabbitMQ amqp091-go: Denial of Service due to synchronous event channel blocking. Red Hat rates this important (CVSS 7.5). Weakness: CWE-770. Red Hat lists fixing advisory RHSA-2026:68290 with package opentelemetry-collector-contrib-main-0.161.0-0.1.hum1. Affected products named by the advisory: Red Hat Hardened Images; Multicluster Global Hub; OpenShift Serverless; Red Hat Advanced Cluster Management for Kubernetes 2; and 2 more. Affected products named by the advisory: Red Hat OpenStack Platform 18.0; Red Hat Quay 3.
High [CVE-2026-77412] RabbitMQ amqp091-go: Denial of Service via Malicious AMQP Field Length
RabbitMQ amqp091-go: Denial of Service via Malicious AMQP Field Length. Red Hat rates this important (CVSS 7.5). Weakness: CWE-805. Red Hat lists fixing advisory RHSA-2026:68290 with package opentelemetry-collector-contrib-main-0.161.0-0.1.hum1. Affected products named by the advisory: Red Hat Hardened Images; Cryostat 4; Multicluster Global Hub; OpenShift Serverless; and 3 more. Affected products named by the advisory: Red Hat Advanced Cluster Management for Kubernetes 2; Red Hat OpenStack Platform 18.0; Red Hat Quay 3.
High [CVE-2026-77404] RabbitMQ amqp091-go: Connection configuration overwrite via unsanitized TLS path parameter injection
RabbitMQ amqp091-go: Connection configuration overwrite via unsanitized TLS path parameter injection. Red Hat rates this important (CVSS 8.8). Weakness: CWE-140. Red Hat lists fixing advisory RHSA-2026:68290 with package opentelemetry-collector-contrib-main-0.161.0-0.1.hum1. Affected products named by the advisory: Red Hat Hardened Images; Cryostat 4; Multicluster Global Hub; OpenShift Serverless; and 3 more. Affected products named by the advisory: Red Hat Advanced Cluster Management for Kubernetes 2; Red Hat OpenStack Platform 18.0; Red Hat Quay 3.
High [CVE-2026-77410] RabbitMQ amqp091-go: Denial of Service via unbounded body buffer allocation
RabbitMQ amqp091-go: Denial of Service via unbounded body buffer allocation. Red Hat rates this important (CVSS 7.5). Weakness: CWE-770. Red Hat lists fixing advisory RHSA-2026:68290 with package opentelemetry-collector-contrib-main-0.161.0-0.1.hum1. Affected products named by the advisory: Red Hat Hardened Images; Custom Metric Autoscaler operator for Red Hat Openshift; Multicluster Global Hub; OpenShift Serverless; and 3 more. Affected products named by the advisory: Red Hat Advanced Cluster Management for Kubernetes 2; Red Hat OpenStack Platform 18.0; Red Hat Quay 3.
High [CVE-2026-77406] RabbitMQ amqp091-go: Denial of Service via signed-to-unsigned integer casting
RabbitMQ amqp091-go: Denial of Service via signed-to-unsigned integer casting. Red Hat rates this important (CVSS 7.5). Weakness: CWE-190. Red Hat lists fixing advisory RHSA-2026:68290 with package opentelemetry-collector-contrib-main-0.161.0-0.1.hum1. Affected products named by the advisory: Red Hat Hardened Images; Cryostat 4; Multicluster Global Hub; OpenShift Serverless; and 3 more. Affected products named by the advisory: Red Hat Advanced Cluster Management for Kubernetes 2; Red Hat OpenStack Platform 18.0; Red Hat Quay 3.
High [CVE-2026-77403] RabbitMQ amqp091-go: Denial of Service via AMQP frame size negotiation
RabbitMQ amqp091-go: Denial of Service via AMQP frame size negotiation. Red Hat rates this moderate (CVSS 7.5). Weakness: CWE-839. Red Hat lists fixing advisory RHSA-2026:68290 with package opentelemetry-collector-contrib-main-0.161.0-0.1.hum1. Affected products named by the advisory: Red Hat Hardened Images; Cryostat 4; Custom Metric Autoscaler operator for Red Hat Openshift; Multicluster Global Hub; and 4 more. Affected products named by the advisory: OpenShift Serverless; Red Hat Advanced Cluster Management for Kubernetes 2; Red Hat OpenStack Platform 18.0; Red Hat Quay 3.
High [CVE-2026-90997] Replay protection bypass leads to unauthorized access via database driver semantics mismatch
Replay protection bypass leads to unauthorized access via database driver semantics mismatch. Red Hat rates this important (CVSS 7.4). Weakness: CWE-294.