Red Hat Linux Security Advisories & CVEs
4447 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-2026-77409] 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.
High [CVE-2026-92125] Arbitrary code execution via Groovy AST transformation bypass
Arbitrary code execution via Groovy AST transformation bypass. Red Hat rates this important (CVSS 8.8). Weakness: CWE-184. Affected product named by the advisory: OpenShift Developer Tools and Services.
High [CVE-2026-19667] Denial of Service via 16-bit length truncation in DNS negative cache handling
Denial of Service via 16-bit length truncation in DNS negative cache handling. Red Hat rates this important (CVSS 7.5). Weakness: CWE-190. 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-2026-81736] Remote Denial of Service via cached SVCB/HTTPS AliasMode records
Remote Denial of Service via cached SVCB/HTTPS AliasMode records. Red Hat rates this important (CVSS 7.5). Weakness: CWE-606. 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-2026-82717] Remote Code Execution Vulnerability in CNAME Synthesis
Remote Code Execution Vulnerability in CNAME Synthesis. Red Hat rates this important (CVSS 8.1). Weakness: CWE-787. Red Hat lists fixing advisory RHSA-2026:71419 with package unbound-0:1.24.2-3.el9_8.8, unbound-0:1.24.2-7.el10_2.6, unbound-main-1.26.1-1.hum1, unbound-0:1.16.2-5.14.el8_10.4. Affected products named by the advisory: Red Hat Enterprise Linux 9; Red Hat Enterprise Linux 10; Red Hat Enterprise Linux 8.
High [CVE-2026-81634] Heap buffer overflow via malicious DNSSEC response
Heap buffer overflow via malicious DNSSEC response. Red Hat rates this important (CVSS 7.5). Weakness: CWE-122. Red Hat lists fixing advisory RHSA-2026:71419 with package unbound-0:1.24.2-3.el9_8.8, unbound-0:1.24.2-7.el10_2.6, unbound-main-1.26.1-1.hum1, unbound-0:1.16.2-5.14.el8_10.4. Affected products named by the advisory: Red Hat Enterprise Linux 9; Red Hat Enterprise Linux 10; Red Hat Enterprise Linux 8.
High [CVE-2026-92220] Resource consumption via argument manipulation in MoRIIO Acknowledgement Handler
Resource consumption via argument manipulation in MoRIIO Acknowledgement Handler. 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-2026-92218] Server-Side Template Injection via two-pass non-sandboxed Jinja render
Server-Side Template Injection via two-pass non-sandboxed Jinja render. Red Hat rates this important (CVSS 8.2). Weakness: CWE-94.