CVE-2026-32591
Mirror-registry: quay: server-side request forgery in proxy cache upstream registry configuration
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.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- High
- User interaction
- Required
What an attacker can affect
- Confidentiality
- High
- Integrity
- Low
- Availability
- None
Exploit likelihood
What each source reports
CVE List Score used
5.2
Mirror-registry: quay: server-side request forgery in proxy cache upstream registry configuration
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.
- Record
CVE-2026-32591- CVSS 3.1
- 5.2 Medium
CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:L/A:N - Weakness
- CWE-918, CWE-918
- Updated
- 2026-11-02
EUVDEUVD-2026-20517
5.2
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.
- Record
EUVD-2026-20517- CVSS 3.1
- 5.2 Medium
CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:L/A:N - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-9wjq-f6rc-86wf
5.2
A flaw was found in Red Hat Quay's Proxy Cache configuration feature. When an organization...
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.
- Record
GHSA-9wjq-f6rc-86wf- CVSS 3.1
- 5.2 Medium
CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:L/A:N - Weakness
- CWE-918
- Updated
- 2026-11-02
NVD
5.2
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.
- Record
CVE-2026-32591- CVSS 3.1
- 5.2 Medium
CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:L/A:N - CVSS 3.1
- 5.5 Medium
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:L/A:N - Weakness
- CWE-918
- Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | CVE List, EUVD, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2026-32591 is a medium vulnerability (CVSS 5.2) in Redhat Quay, published April 8, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.34%, the 27th percentile. No source names a fixed version.
References
access.redhat.com/errata/RHSA-2026:24833
access.redhat.com/errata/RHSA-2026:40262
access.redhat.com/errata/RHSA-2026:41031
access.redhat.com/errata/RHSA-2026:41066
access.redhat.com/errata/RHSA-2026:42146
access.redhat.com/errata/RHSA-2026:42796
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access.redhat.com/errata/RHSA-2026:43052
access.redhat.com/errata/RHSA-2026:48085
access.redhat.com/errata/RHSA-2026:70267
access.redhat.com/security/cve/CVE-2026-32591
bugzilla.redhat.com/show_bug.cgi?id=2446965
security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-32591.json
nvd.nist.gov/vuln/detail/CVE-2026-32591
access.redhat.com/errata/RHSA-2026:19375
access.redhat.com/errata/RHSA-2026:21017
github.com/advisories/GHSA-9wjq-f6rc-86wf