Medium severity · published Jul 24, 2026
CVE-2026-16910
Quay: ssrf in red hat quay notification webhooks (slack/generic)
5.5
CVSS
0.3%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:L/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
High
User interaction
None
Confidentiality
Low
Integrity
Low
Availability
None
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 21% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
RH
Red Hat OpenShift Update Service · Red Hat
All versions, or not specified · source: vendor
RH
Red Hat Quay 3 · Red Hat
All versions, or not specified · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-16910
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-16910
access.redhat.com
https://access.redhat.com/security/cve/CVE-2026-16910
bugzilla.redhat.com
https://bugzilla.redhat.com/show_bug.cgi?id=2506685
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