Privilege escalation in Project Quay

CVE-2025-4374

A flaw was found in Quay. When an organization acts as a proxy cache, and a user or robot pulls an image that hasn't been mirrored yet, they are granted "Admin" permissions on the newly created repository.

Published · last modified .

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N.

EPSS exploit prediction

EPSS: 0.003 (25.7th percentile), scored .

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 26th percentile — 25.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2025-4374: held from 0.003 to 0.003.

EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: +0.000

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2025-4374?
CVE-2025-4374 is a medium-severity vulnerability in Project Quay, classified under Incorrect Privilege Assignment. CVSS score: 6.5/10. Published 2025-05-06.
How severe is CVE-2025-4374?
Medium severity. CVSS v3 base score is 6.5 out of 10.