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CVE-2026-32591 medium CVSS 5.2

SSRF (Server-Side Request Forgery) in Red Hat Quay's Proxy Cache configuration feature (CVE-2026-32591)

Summary

SSRF in Red Hat Quay's Proxy Cache configuration feature (CVE-2026-32591). Confidential information can be exposed externally.

Original description

The description as published by the source.

A flaw was found in Red Hat Quay's Proxy Cache configuration feature. When an organization administrator configures an upstream registry for proxy caching, Quay makes a network connection to the specified registry hostname without verifying that it points to a legitimate external service. An attacker with organization administrator privileges could supply a crafted hostname to force the Quay server to make requests to internal network services, cloud infrastructure endpoints, or other resources that should not be accessible from the Quay application.

Source: NIST National Vulnerability Database 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-2026-32591 has been found in Red Hat Quay's Proxy Cache configuration feature.
Confidential information can be exposed externally. CVSS score: 5.2/10.
What to do: apply the vendor's official patched release.
If unsure, ask your IT team or search "Red Hat Quay's Proxy Cache configuration feature CVE-2026-32591" on the vendor's site.

CVE-2026-32591 (Red Hat Quay's Proxy Cache configuration feature) — CWE-918 / CVSS v3 5.2
Attack vector: remote (network-reachable)
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

SSRF (CWE-918) exists in Red Hat Quay's Proxy Cache configuration feature.

📍 Affected scope

Check the vendor advisory for the affected versions of Red Hat Quay's Proxy Cache configuration feature.

🔥 Severity

Severity: Medium (CVSS 5.2/10). Confidential information can be exposed externally.

🔧 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 Quay's Proxy Cache configuration feature 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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