Vulnerability record/PUBLISHED/Published Jul 24, 2026 06:36:18 UTC

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.

Base score5.5/ 10

SeverityMediumCVSS 3.1

Exploitability / impact

CVSS metric breakdown

Vector-derived attributes

Base severityMedium

Attack vectorNetworkAV

Attack complexityLowAC

Privileges requiredHighPR

User interactionNoneUI

ScopeChangedS

Confidentiality impactLowC

Integrity impactLowI

Availability impactNoneA

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

CVSS communicates standardized severity and impact characteristics. It does not establish whether a system is exploitable in your specific environment.

Record context

CVE Numbering Authorityredhat

Last updatedNov 1, 2026 05:06:49 UTC

PublishedJul 24, 2026 06:36:18 UTC

ReservedJul 24, 2026 06:26:22 UTC

Credits

Red Hat would like to thank Martin Brodeur for reporting this issue.