# CVE-2026-74243: Quay: unauthenticated secscan notification endpoint in quay when psk is unset

> CVE-2026-74243: Quay: unauthenticated secscan notification endpoint in quay when psk is unset. CVSS 6.5 (CVSS 3.1).

Canonical: https://rewindex.com/cve/CVE-2026-74243
Last updated: 2026-08-20T19:49:07Z

- Published: 2026-08-14 22:43 UTC · Updated: 2026-08-20 19:49 UTC · Assigner: redhat
- CVSS: 6.5 (CVSS 3.1) · Severity: Medium · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L
- EPSS: 0.46%, 40th percentile (scored 2026-10-25)
- CISA KEV: no
- CWE: CWE-306

## 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.

## Affected vendors and products

- Red Hat: Red Hat OpenShift Update Service
- Red Hat: Red Hat Quay 3

## Tracked companies

- [Red Hat (incl. Quay.io)](https://rewindex.com/company/red-hat.md)

## References

- [CVE record on cve.org](https://www.cve.org/CVERecord?id=CVE-2026-74243)
- [NVD entry](https://nvd.nist.gov/vuln/detail/CVE-2026-74243)
- [https://access.redhat.com/security/cve/CVE-2026-74243](https://access.redhat.com/security/cve/CVE-2026-74243)
- [https://bugzilla.redhat.com/show\_bug.cgi?id=2516142](https://bugzilla.redhat.com/show_bug.cgi?id=2516142)

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_Sources: CVE records from the CVE Program (cve.org). CVE® is a registered trademark of The MITRE Corporation. (https://www.cve.org/) This product uses data from the NVD API but is not endorsed or certified by the NVD. (https://nvd.nist.gov/) Known Exploited Vulnerabilities catalog from CISA. (https://www.cisa.gov/known-exploited-vulnerabilities-catalog) EPSS scores from FIRST (Exploit Prediction Scoring System). (https://www.first.org/epss/)_


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Canonical: https://rewindex.com/cve/CVE-2026-74243 · Markdown: https://rewindex.com/cve/CVE-2026-74243.md · JSON: https://rewindex.com/api/v1/cves/CVE-2026-74243 · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-10-26T03:09:15.355Z