CVE-2026-77125: Sonatype Nexus Repository Manager

High severity, CVSS 7.1. EPSS: 0.3% chance of exploitation in the next 30 days.

A vulnerability was identified in Sonatype Nexus Repository 3 in which two blobstore group management REST API endpoints did not correctly enforce the intended authorization check. A user granted only the nexus:blobstores:create permission could invoke these endpoints to convert an existing blobstore into a group blobstore, an action that should require the nexus:blobstores:update permission instead. This could result in unauthorized modification of blobstore configuration without administrator approval. The nexus:blobstores:create permission is a named permission that must be explicitly granted by an administrator; it is not held by default.

Affected products

• Sonatype Nexus Repository Manager: from 3.19.0, before 3.96.0 (fixed in 3.96.0)

Published 2026-09-02. Last modified 2026-09-22.