CVE-2026-77122

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

Published: Sep 2, 2026Updated: Sep 22, 2026 Sources: CVE List NVDCWE-863

4.3MEDIUM

Description

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.

No summary for this CVE yet.

CVSS Vector Breakdown

Exploitability

AV:NAttack Vector

Network

AC:LAttack Complexity

Low

PR:LPrivileges Required

Low

UI:NUser Interaction

None

Scope

S:UScope

Unchanged

Impact

C:LConfidentiality

Low

I:NIntegrity

None

A:NAvailability

None

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Weaknesses

CWE-863

Affected Products

Sonatype

commercial·USaka nexus repository, nexus repository manager

Nexus Repository 3On-prem

DevTools & CI / build-test-tools

nexus repository managerOn-premWeb App

DevTools & CI / artifact-registry

Exploitability

Workaround Available

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Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

2 techniques

Initial Access

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References

https://help.sonatype.com/en/sonatype-nexus-repository-3-96-0-release-notes.html

help.sonatype.com

https://support.sonatype.com/hc/en-us/articles/54637328224019/

support.sonatype.com

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