CVE-2026-17594: Nexus Repository 3 - Authorization Bypass in Repository Creation

Severity: medium (CVSS 4.9 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.0% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2026-08-07 · updated 2026-09-22
Weakness: CWE-863

Description

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.

Affected products

Sonatype Nexus Repository 3: from 3.0.0 before 3.95.0 — fixed in 3.95.0

How to fix

Upgrade to a fixed version: Sonatype Nexus Repository 3 3.95.0. Check the vendor advisory for mitigations.

References

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