CVE-2026-74242: Quay: repository notification uuid idor in quay api

Severity: medium (CVSS 4.4 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-08-14 · updated 2026-08-20
Weakness: CWE-639

Description

A flaw was found in Red Hat Quay. An administrator of any repository, by knowing or guessing a target notification's Universally Unique Identifier (UUID), can read the notification configuration, including sensitive details like webhook URLs, Slack tokens, and email addresses. This vulnerability also allows them to trigger test notifications for another repository. This could lead to unauthorized information disclosure and potential misuse of notification services.

Affected products

Red Hat OpenShift Update Service: all versions
Red Hat Quay 3: 3.0.0

References

https://access.redhat.com/security/cve/CVE-2026-74242
https://bugzilla.redhat.com/show_bug.cgi?id=2516140

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