CVE-2026-77122

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.

CVSS v3 4.3 MEDIUM

4.3^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.8 / Impact : 1.4

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact LOW

Integrity Impact NONE

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://help.sonatype.com/en/sonatype-nexus-repository-3-96-0-release-notes.html	Release Notes
https://support.sonatype.com/hc/en-us/articles/54637328224019/	Mitigation Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:sonatype:nexus_repository_manager:*:*:*:*:*:*:*:*

History

22 Sep 2026, 17:25

Type	Values Removed	Values Added
CPE		cpe:2.3:a:sonatype:nexus_repository_manager::::::::
CVSS	v2 : ~~unknown~~ v3 : ~~unknown~~	v2 : unknown v3 : 4.3
First Time		Sonatype Sonatype nexus Repository Manager
References	~~() https://help.sonatype.com/en/sonatype-nexus-repository-3-96-0-release-notes.html -~~	() https://help.sonatype.com/en/sonatype-nexus-repository-3-96-0-release-notes.html - Release Notes
References	~~() https://support.sonatype.com/hc/en-us/articles/54637328224019/ -~~	() https://support.sonatype.com/hc/en-us/articles/54637328224019/ - Mitigation, Vendor Advisory

Information

Published : 2026-09-02 18:21

Updated : 2026-09-22 17:25

NVD link : CVE-2026-77122

Mitre link : CVE-2026-77122

CVE.ORG link : CVE-2026-77122

JSON object : View

Products Affected

sonatype

nexus_repository_manager

CWE

CWE-863

Incorrect Authorization

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Repository 3", "versions": [{"status": "affected", "version": "3.38.0", "lessThan": "3.96.0", "versionType": "semver"}], "defaultStatus": "unaffected"}]}], "published": "2026-09-02T18:21:23.770", "references": [{"url": "https://help.sonatype.com/en/sonatype-nexus-repository-3-96-0-release-notes.html", "tags": ["Release Notes"], "source": "103e4ec9-0a87-450b-af77-479448ddef11"}, {"url": "https://support.sonatype.com/hc/en-us/articles/54637328224019/", "tags": ["Mitigation", "Vendor Advisory"], "source": "103e4ec9-0a87-450b-af77-479448ddef11"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Secondary", "source": "103e4ec9-0a87-450b-af77-479448ddef11", "description": [{"lang": "en", "value": "CWE-863"}]}], "descriptions": [{"lang": "en", "value": "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."}], "lastModified": "2026-09-22T17:25:34.887", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:sonatype:nexus_repository_manager:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "90367951-1E7C-4E31-9C2F-4CCD402D44A4", "versionEndExcluding": "3.96.0", "versionStartIncluding": "3.38.0"}], "operator": "OR"}]}], "sourceIdentifier": "103e4ec9-0a87-450b-af77-479448ddef11"}