Red Hat Linux Security Advisories & CVEs
11553 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-2026-42784] 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-2026:76735 with package rust-sequoia-sqv-0:1.3.0.2-1.el10_2, rust-rpm-sequoia-0:1.10.2.1-1.el10_2, rust-podman-sequoia-main-0.3.2-4.hum1, rust-rpm-sequoia-0:1.10.2.1-1.el9_8. Affected products named by the advisory: Red Hat Enterprise Linux 10; Red Hat Enterprise Linux 9. Affected products named by the advisory: Red Hat Hardened Images; Confidential Compute Attestation; Red Hat Ansible Automation Platform 2; Red Hat OpenShift Container Platform 4; and 3 more.
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.
High [CVE-2026-80274] Denial of Service via crafted DNSSEC reply
Denial of Service via crafted DNSSEC reply. Red Hat rates this important (CVSS 7.5). Weakness: CWE-617. Red Hat lists fixing advisory RHSA-2026:75577 with package bind9.18-32:9.18.29-14.el9_8.10, bind-main-9.20.29-0.1.hum1, bind-32:9.18.33-15.el10_2.12, bind-32:9.16.23-40.el9_8.10. Affected products named by the advisory: Red Hat Enterprise Linux 9; Red Hat Enterprise Linux 10.
High [CVE-2026-76163] Denial of Service via TKEY query with specific configuration
Denial of Service via TKEY query with specific configuration. Red Hat rates this important (CVSS 7.5). Weakness: CWE-617. Red Hat lists fixing advisory RHSA-2026:68279 with package bind-main-9.20.29-0.1.hum1. Affected product named by the advisory: Red Hat Hardened Images.
High [CVE-2026-19666] Denial of Service via malformed DNS64 responses
Denial of Service via malformed DNS64 responses. Red Hat rates this important (CVSS 7.5). Weakness: CWE-617. Red Hat lists fixing advisory RHSA-2026:75577 with package bind9.18-32:9.18.29-14.el9_8.10, bind-main-9.20.29-0.1.hum1, bind-32:9.18.33-15.el10_2.12, bind-32:9.16.23-40.el9_8.10. Affected products named by the advisory: Red Hat Enterprise Linux 9; Red Hat Enterprise Linux 10.
High [CVE-2026-92365] vllm-project vllm: Denial of Service via algorithmic complexity vulnerability
vllm-project vllm: Denial of Service via algorithmic complexity vulnerability. Red Hat rates this important (CVSS 7.5). Weakness: CWE-770. Affected products named by the advisory: Red Hat AI Inference Server; Red Hat Enterprise Linux AI (RHEL AI) 3; Red Hat OpenShift AI (RHOAI).
High [CVE-2026-81563] BIND resolver: Denial of Service due to resource exhaustion in SVCB/HTTPS AliasMode processing
BIND resolver: Denial of Service due to resource exhaustion in SVCB/HTTPS AliasMode processing. Red Hat rates this important (CVSS 7.5). Weakness: CWE-772. Red Hat lists fixing advisory RHSA-2026:75577 with package bind9.18-32:9.18.29-14.el9_8.10, bind-main-9.20.29-0.1.hum1, bind-32:9.18.33-15.el10_2.12. Affected products named by the advisory: Red Hat Enterprise Linux 9; Red Hat Enterprise Linux 10.
High [CVE-2026-77692] Remote Denial of Service via crafted DNS-over-HTTPS request
Remote Denial of Service via crafted DNS-over-HTTPS request. Red Hat rates this important (CVSS 7.5). Weakness: CWE-617. Red Hat lists fixing advisory RHSA-2026:68279 with package bind-main-9.20.29-0.1.hum1. Affected product named by the advisory: Red Hat Hardened Images.