Description
A flaw was found in Red Hat Quay. When the SECURITY_SCANNER_V4_PSK (pre-shared key) is not set, a remote unauthenticated attacker can send POST requests to the security scanner notification endpoint. This allows the attacker to flood the notification queue and inject path traversal characters into Clair API URL paths. The primary consequence is worker resource exhaustion and blind path manipulation on the configured Clair host, potentially leading to a denial of service.
Published: 2026-08-14
Score: 6.5 Medium
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

Vendor Workaround

To mitigate this vulnerability, configure the `SECURITY_SCANNER_V4_PSK` in your Red Hat Quay standalone installation. This pre-shared key enables authentication for the security scanner notification endpoint, preventing unauthenticated access. Refer to the Red Hat Quay documentation for instructions on setting this configuration parameter. A restart of the Quay service may be required for the changes to take effect.

Tracking

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Advisories

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History

Tue, 18 Aug 2026 03:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Mon, 17 Aug 2026 11:30:00 +0000

Type Values Removed Values Added
First Time appeared Redhat quay 3
Vendors & Products Redhat quay 3

Sat, 15 Aug 2026 00:15:00 +0000

Type Values Removed Values Added
References
Metrics threat_severity

None

threat_severity

Moderate


Fri, 14 Aug 2026 23:00:00 +0000

Type Values Removed Values Added
Description A flaw was found in Red Hat Quay. When the SECURITY_SCANNER_V4_PSK (pre-shared key) is not set, a remote unauthenticated attacker can send POST requests to the security scanner notification endpoint. This allows the attacker to flood the notification queue and inject path traversal characters into Clair API URL paths. The primary consequence is worker resource exhaustion and blind path manipulation on the configured Clair host, potentially leading to a denial of service.
Title Quay: unauthenticated secscan notification endpoint in quay when psk is unset
First Time appeared Redhat
Redhat openshift Update Service
Redhat quay
Weaknesses CWE-306
CPEs cpe:/a:redhat:openshift_update_service:5
cpe:/a:redhat:quay:3
Vendors & Products Redhat
Redhat openshift Update Service
Redhat quay
References
Metrics cvssV3_1

{'score': 6.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L'}


Subscriptions

Redhat Openshift Update Service Quay Quay 3
cve-icon MITRE

Status: PUBLISHED

Assigner: redhat

Published:

Updated: 2026-08-18T02:17:27.523Z

Reserved: 2026-08-14T19:46:37.191Z

Link: CVE-2026-74243

cve-icon Vulnrichment

Updated: 2026-08-18T02:17:23.291Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-08-14T23:16:34.360

Modified: 2026-08-18T15:04:46.610

Link: CVE-2026-74243

cve-icon Redhat

Severity : Moderate

Publid Date: 2026-08-14T00:00:00Z

Links: CVE-2026-74243 - Bugzilla

cve-icon OpenCVE Enrichment

Updated: 2026-08-17T10:59:55Z

Weaknesses