SSRF in Red Hat Mirror Registry For Openshift
CVE-2026-32591
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.
Vulnerability class: SSRF (Server-Side Request Forgery)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.2 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:L/A:N.
EPSS exploit prediction
EPSS: 0.005 (37.8th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 38th percentile — 37.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.005 · change: +0.001
Affected products
- Red Hat Mirror Registry For Openshift
- Red Hat Mirror Registry For Openshift 2
- Red Hat Quay 3
- Red Hat Quay 3.1 — versions 1783750447
- Red Hat Quay 3.10 — versions 1783750447
- Red Hat Quay 3.12 — versions 1783751865, 1784353904
- Red Hat Quay 3.14 — versions 1779689392
- Red Hat Quay 3.15 — versions 1784351966
- Red Hat Quay 3.16 — versions 1783955846, 1779204086
- Red Hat Quay 3.17 — versions 1780604033
Weakness classification (CWE)
References
- access.redhat.com/security/cve/CVE-2026-32591 (vdb-entry, Vendor Advisory)
- bugzilla.redhat.com/show_bug.cgi (issue-tracking, Issue Tracking, Vendor Advisory)
- access.redhat.com/errata/RHSA-2026:19375 (vendor-advisory)
- access.redhat.com/errata/RHSA-2026:21017 (vendor-advisory)
- access.redhat.com/errata/RHSA-2026:24833 (vendor-advisory)
- 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
- access.redhat.com/errata/RHSA-2026:40262 (vendor-advisory)
- access.redhat.com/errata/RHSA-2026:41066 (vendor-advisory)
- access.redhat.com/errata/RHSA-2026:41031 (vendor-advisory)
- access.redhat.com/errata/RHSA-2026:42146 (vendor-advisory)
Frequently asked questions
- What is CVE-2026-32591?
- CVE-2026-32591 is a medium-severity vulnerability in Red Hat Mirror Registry For Openshift, classified under Server-Side Request Forgery (SSRF). CVSS score: 5.2/10. Published 2026-04-08.
- How severe is CVE-2026-32591?
- Medium severity. CVSS v3 base score is 5.2 out of 10.