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CVE-2026-9165 high CVSS 7.7

Vulnerability in Red Hat Advanced Cluster Security for Kubernetes (CVE-2026-9165)

Summary

Vulnerability in Red Hat Advanced Cluster Security for Kubernetes (CVE-2026-9165). Risk of unauthorized operations or information disclosure.

Original description

The description as published by the source.

A flaw was found in Red Hat Advanced Cluster Security for Kubernetes (RHACS). Central does not limit the depth of GraphQL queries served on the authenticated GraphQL API. An authenticated user with a valid API token can send deeply nested queries that cause excessive resource consumption in Central, resulting in a denial of service for the management plane.

Source: GitHub Security Advisories (Global) NVD GitHub Advisory

Auto-generated summary

Assembled by SecPulse from the source data (CVSS, CWE, affected versions) using templates — no AI involved. Check the original description and references below for exact details.

A vulnerability tracked as CVE-2026-9165 has been found in Red Hat Advanced Cluster Security for Kubernetes.
Risk of unauthorized operations or information disclosure. CVSS score: 7.7/10.
What to do: apply the vendor's official patched release.
If unsure, ask your IT team or search "Red Hat Advanced Cluster Security for Kubernetes CVE-2026-9165" on the vendor's site.

CVE-2026-9165 (Red Hat Advanced Cluster Security for Kubernetes) — CWE-400 / CVSS v3 7.7
Attack vector: remote (network-reachable) / no user interaction
Plan: 1) Audit SBOM/dependencies, 2) Stage→prod upgrade, 3) Add WAF/proxy monitoring on affected endpoints, 4) Hunt IOCs in logs.
Refs: see the GHSA / vendor advisory / patched release linked on this page.

❓ What is the problem

A vulnerability (CWE-400) exists in Red Hat Advanced Cluster Security for Kubernetes.

📍 Affected scope

Check the vendor advisory for the affected versions of Red Hat Advanced Cluster Security for Kubernetes.

🔥 Severity

Severity: High (CVSS 7.7/10). Risk of unauthorized operations or information disclosure.

🔧 How to fix

Update to the patched release per vendor advisory.

🛡️ Workaround

Until the patch is applied: disable the affected feature, apply WAF rules, or restrict access via network ACLs.

🔍 Detection

Search webserver/proxy logs for unusual request patterns matching this CVE's known IOCs. Audit SBOM/dependencies to find affected services.

Response actions

Concrete steps and command examples for SOC/SRE teams to execute in order

  1. 1
    Identify exposure identify 
    Audit SBOM/dependencies for affected components.

    資産台帳・SBOM・依存マニフェストで Red Hat Advanced Cluster Security for Kubernetes を使っているサービスとバージョンを洗い出す。

  2. 2
    Post-deployment verification verify 
    Confirm patched version is live in production

    パッチ適用後、ステージングで PoC または同等の悪用パターンを再現して脆弱性が閉じたことを確認。本番ではアクセスログ・WAF でアラート再発が無いか継続監視。

References

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