Vulnerability · Published Sep 2, 2026 · Assigned by Sonatype
CVE-2026-77125Nexus Repository 3 - Incorrect Authorization on Blobstore Group Endpoints
High 7.1
In plain English
A high-severity incorrect authorization in Nexus Repository 3 from Sonatype. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 22% of all known vulnerabilities).
Official description
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 (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Sonatype | Nexus Repository 3 | 3.19.0 – before 3.96.0 |
Weakness: CWE-863 · Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N