Unauthenticated denial of service via scanner notifications
Published Aug 14, 2026 · Updated Aug 14, 2026
Missing authentication in Red Hat Quay allows remote attackers to exhaust workers through security-scanner notification requests. When SECURITY_SCANNER_V4_PSK is unset, the POST notification handler accepts unauthenticated input, queues attacker-controlled notifications, and embeds path traversal characters in Clair API URL paths. Standalone deployments with the key omitted are exposed; operator-managed deployments generate the key, while Red Hat lists OpenShift Update Service without describing a distinct path.
Summary
What happened
Missing authentication in Red Hat Quay allows remote attackers to exhaust workers through security-scanner notification requests. When SECURITY_SCANNER_V4_PSK is unset, the POST notification handler accepts unauthenticated input, queues attacker-controlled notifications, and embeds path traversal characters in Clair API URL paths. Standalone deployments with the key omitted are exposed; operator-managed deployments generate the key, while Red Hat lists OpenShift Update Service without describing a distinct path.
The record
- CVE
- CVE-2026-74243
- Published
- Aug 14, 2026
- Updated
- Aug 14, 2026
- Vendor
- 389 Directory Server
- Product
- Red Hat Quay
- Classifications
- CWE-306, T1499.004
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Aug 14, 2026CVE publishedPublication date reported by the CVE source.
- Aug 14, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Affected versions are unavailable in this record. Check the vendor advisory for version and patch details.
What conditions does exploitation require?
What is affected?
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
No public exploit references are available in this record.
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Technologies
Your stack
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Your stack
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