5.5 Medium

A flaw was found in Red Hat Quay's notification webhook feature.

CVE-2026-16910

A flaw was found in Red Hat Quay's notification webhook feature. The Slack and generic webhook notification handlers accept user-supplied URLs without SSRF validation, allowing a repository administrator to make the Quay worker issue POST requests to internal network addresses or cloud infrastructure endpoints that should not be reachable from the application.

Assessment

CVSS: 5.5 (v3.1)
Severity: Medium
EPSS: 0.29% chance of exploitation in the next 30 days
Known exploited: Not listed in CISA KEV
Exploit availability: Nothing found in Exploit-DB, Metasploit, Nuclei or public PoC repositories
Published: 24 July 2026
Last updated: 1 November 2026
Assigner: redhat

CVSS vectorCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:L/I:L/A:N

At the source

EUVD (ENISA)

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