---
id: CVE-2026-77125
title: >-
  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
summary: >-
  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
  permissi…
severity: high
cvss: 7.1
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:N'
cwe:
  - CWE-863
vendor: sonatype
product: nexus_repository_manager
affected:
  - 'nexus_repository_manager >= 3.19.0, < 3.96.0'
patched:
  - nexus_repository_manager 3.96.0
published: '2026-09-02'
updated: '2026-09-22'
sourceUpdated: '2026-09-22T17:17:56.897'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-77125'
references:
  - url: >-
      https://help.sonatype.com/en/sonatype-nexus-repository-3-96-0-release-notes.html
    label: 103e4ec9-0a87-450b-af77-479448ddef11
  - url: 'https://support.sonatype.com/hc/en-us/articles/54643114434451/'
    label: 103e4ec9-0a87-450b-af77-479448ddef11
tags:
  - nvd
epss: 0.00288
epssPercentile: 0.19112
ingestedAt: '2026-09-08T20:10:03.160Z'
---

## Overview

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

- `nexus_repository_manager >= 3.19.0, < 3.96.0`

## Remediation

Upgrade past the affected range:

- `nexus_repository_manager 3.96.0`