A flaw was found in Quay. An authenticated repository administrator could bypass the hostname blacklist in webhook notifications, leading to a Server-Side Request Forgery (SSRF) vulnerability. This allows the Quay application to be tricked into sending requests to internal network resources, such as cloud metadata services or other services within the cluster. Consequently, this could lead to the disclosure of sensitive information from these internal services.
Advisories

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Fixes

Solution

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Workaround

Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.

History

Mon, 12 Oct 2026 19:00:00 +0000

Type Values Removed Values Added
Description A flaw was found in Quay. An authenticated repository administrator could bypass the hostname blacklist in webhook notifications, leading to a Server-Side Request Forgery (SSRF) vulnerability. This allows the Quay application to be tricked into sending requests to internal network resources, such as cloud metadata services or other services within the cluster. Consequently, this could lead to the disclosure of sensitive information from these internal services.
Title Quay: quay: webhook notification ssrf -- hostname-string blocklist trivially bypassable
First Time appeared Redhat
Redhat mirror Registry
Redhat quay
Weaknesses CWE-918
CPEs cpe:/a:redhat:mirror_registry:1
cpe:/a:redhat:mirror_registry:2
cpe:/a:redhat:quay:3
Vendors & Products Redhat
Redhat mirror Registry
Redhat quay
References
Metrics cvssV3_1

{'score': 6.4, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: redhat

Published:

Updated: 2026-10-12T18:50:20.163Z

Reserved: 2026-09-03T20:10:49.398Z

Link: CVE-2026-85471

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-10-12T19:16:40.133

Modified: 2026-10-12T19:16:40.133

Link: CVE-2026-85471

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses