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Medium

Nexus Repository 3 - Incorrect Authorization Allows Disclosure of Member Repository Metadata via Group Repository Permissions

Type: advisorySources: OSV

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.

Products
Not specified
Affected versions
Not specified
Fixed versions
Not specified
CVEs
CVE-2026-77122
Confirmed fixed CVEs
Not specified
Updated in this feed
7 Nov 2026, 04:16 UTC · Revision 1

Source evidence

Nexus Repository 3 - Incorrect Authorization Allows Disclosure of Member Repository Metadata via Group Repository Permissions

core-osv · Original source

Published 2 Sept 2026, 17:03 UTC

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.

osv:CVE-2026-77122
Complete source record
{
  "id": "31bd0db518968f06de8aa23bc67a5f6d7ae9f453f2d27fc8b33f9097083b9d38",
  "url": "https://osv.dev/vulnerability/CVE-2026-77122",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Nexus Repository 3 - Incorrect Authorization Allows Disclosure of Member Repository Metadata via Group Repository Permissions",
    "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 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.",
    "evidence": "osv:CVE-2026-77122",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2026-77122",
      "aliases": [
        "CVE-2026-77122"
      ],
      "metrics": [
        {
          "type": "CVSS_V4",
          "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/sonatype/nexus-public",
              "type": "GIT",
              "events": [
                {
                  "introduced": "967780bde7b91b2858df835ee4d3963fd7c10b4b"
                },
                {
                  "fixed": "3864d782ba6fa207d390ea66571fd523c6245e4e"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:sonatype:nexus_repository_manager:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "3.38.0"
                      },
                      {
                        "fixed": "3.96.0"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "versions": [
            "release-3.94.2-01",
            "release-3.94.1-06",
            "release-3.94.0-12",
            "release-3.93.2-01",
            "release-3.93.1-04",
            "release-3.93.0-06",
            "release-3.92.3-01",
            "release-3.92.2-01",
            "release-3.92.1-05",
            "release-3.91.1-04",
            "release-3.91.0-07",
            "release-3.90.0-21",
            "release-3.89.1-02",
            "release-3.89.0-09",
            "release-3.88.0-08",
            "release-3.87.1-01",
            "release-3.86.2-01",
            "release-3.85.0-03",
            "release-3.84.1-01",
            "release-3.87.0-03",
            "release-3.86.0-08",
            "release-3.84.0-03",
            "release-3.83.2-01",
            "release-3.83.1-03",
            "release-3.82.0-08",
            "release-3.83.0-08",
            "release-3.81.1-01",
            "release-3.81.0-08",
            "release-3.80.0-06",
            "release-3.79.1-04",
            "release-3.79.0-09",
            "release-3.78.2-04",
            "release-3.78.1-02",
            "release-3.78.0-14",
            "release-3.77.2-02",
            "release-3.77.1-01",
            "release-3.77.0-08",
            "release-3.76.1-01",
            "release-3.76.0-03",
            "release-3.75.1-01",
            "release-3.75.0-06",
            "release-3.74.0-05",
            "release-3.73.0-12",
            "release-3.72.0-04",
            "release-3.71.0-06",
            "release-3.70.1-02",
            "release-3.70.0-03",
            "release-3.69.0-02",
            "release-3.68.1-02",
            "release-3.68.0-04",
            "release-3.67.1-01",
            "release-3.67.0-03",
            "release-3.66.0-02",
            "release-3.65.0-02",
            "release-3.64.0-04",
            "release-3.64.0-03",
            "release-3.63.0-01",
            "release-3.62.0-01",
            "release-3.61.0-02",
            "release-3.60.0-02",
            "release-3.59.0-01",
            "release-3.58.1-02",
            "release-3.58.1-01",
            "release-3.58.0-01",
            "release-3.57.0-01",
            "release-3.56.0-01",
            "release-3.55.0-01",
            "release-3.54.1-01",
            "release-3.53.1-02",
            "release-3.53.0-01",
            "release-3.52.0-01",
            "release-3.51.0-01",
            "release-3.50.0-01",
            "release-3.49.0-02",
            "release-3.48.0-01",
            "release-3.47.1-01",
            "release-3.47.0-01",
            "release-3.46.0-01",
            "release-3.45.1-SNAPSHOT",
            "release-3.45.0-01",
            "release-3.44.0-01",
            "release-3.43.0-01",
            "release-3.42.0-01",
            "release-3.41.1-01",
            "release-3.41.0-01",
            "release-3.40.0-03",
            "release-3.39.0-01",
            "release-3.38.1-01",
            "release-3.38.0-01"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-77122.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:49.486066213Z",
      "provider": "osv",
      "references": [
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/77xxx/CVE-2026-77122.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-77122",
        "https://support.sonatype.com/hc/en-us/articles/54637328224019/",
        "https://help.sonatype.com/en/sonatype-nexus-repository-3-96-0-release-notes.html"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-863"
        ],
        "cna_assigner": "Sonatype",
        "unresolved_ranges": [
          {
            "extracted_events": [
              {
                "range": [
                  {
                    "introduced": "3.38.0"
                  },
                  {
                    "fixed": "3.96.0"
                  }
                ],
                "source": "AFFECTED_FIELD",
                "strategy": "StandardRange"
              }
            ]
          }
        ],
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/77xxx/CVE-2026-77122.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-77122",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 518058,
  "published_at": "2026-09-02T17:03:25.96+00:00"
}