---
id: CVE-2026-77122
title: >-
  An authorization flaw in the REST API repository details endpoint (GET
  /service/rest/v1/repositories/{repositoryName}) in Sonatype Nexus Repository 3
  allowed an account holding read or browse permission on a group repository to
  retrieve …
summary: >-
  An authorization flaw in the REST API repository details endpoint (GET
  /service/rest/v1/repositories/{repositoryName}) in Sonatype Nexus Repository 3
  allowed an account holding read or browse permission on a group repository to
  retrieve …
severity: medium
cvss: 4.3
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N'
cwe:
  - CWE-863
vendor: sonatype
product: nexus_repository_manager
affected:
  - 'nexus_repository_manager >= 3.38.0, < 3.96.0'
patched:
  - nexus_repository_manager 3.96.0
published: '2026-09-02'
updated: '2026-09-22'
sourceUpdated: '2026-09-22T17:25:34.887'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-77122'
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/54637328224019/'
    label: 103e4ec9-0a87-450b-af77-479448ddef11
tags:
  - nvd
epss: 0.00281
epssPercentile: 0.18269
ingestedAt: '2026-09-08T20:10:03.160Z'
---

## Overview

An authorization flaw in the REST API repository details endpoint (GET /service/rest/v1/repositories/{repositoryName}) in Sonatype Nexus Repository 3 allowed an account holding read or browse permission on a group repository to retrieve metadata for member repositories on which it held no direct permission, by requesting the endpoint directly for the member repository name. For proxy repositories, the disclosed metadata includes the configured remote URL, which may reveal internal upstream hostnames. This includes the anonymous user if it has been granted this permission; whether the anonymous user holds this permission depends on the role and permission configuration of the specific installation.

## Affected

- `nexus_repository_manager >= 3.38.0, < 3.96.0`

## Remediation

Upgrade past the affected range:

- `nexus_repository_manager 3.96.0`