Auth bypass in Sonatype Nexus Repository 3

CVE-2026-17594

Nexus Repository 3 CE/Pro versions 3.0.0 through 3.94.x contain an incorrect authorization vulnerability (CWE-863) in the repository-creation user interface. An individual user account holding a delegated repository-admin privilege scoped to a specific repository format could create a repository of a different, unauthorized format, because authorization was checked against one request field while a separate, attacker-controlled field determined the repository format actually created. This does not affect the anonymous user, which cannot hold this privilege by default. Fixed in version 3.95.0.

Vulnerability class: Broken Access Control

Published · last modified .

CVSS v3 metric

CVSS v3 base score 4.9 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N.

EPSS exploit prediction

EPSS: 0.010 (62.6th percentile), scored .

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 63rd percentile — 62.6% 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-2026-17594: held from 0.007 to 0.010.

EPSS over last 30 days · oldest: 0.007 · newest: 0.010 · change: +0.003

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-17594?
CVE-2026-17594 is a medium-severity vulnerability in Sonatype Nexus Repository 3, classified under Incorrect Authorization. CVSS score: 4.9/10. Published 2026-08-07.
How severe is CVE-2026-17594?
Medium severity. CVSS v3 base score is 4.9 out of 10.