What’s Vulnerable › Vulnerabilities

CVE-2026-16910: Quay: ssrf in red hat quay notification webhooks (slack/generic)

• Severity: medium (CVSS 5.5 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: 2026-07-24 · updated 2026-11-01
• Weakness: CWE-918

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.

Affected products

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

References

• https://access.redhat.com/security/cve/CVE-2026-16910
• https://bugzilla.redhat.com/show_bug.cgi?id=2506685

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