CVE-2026-77122

Medium

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.

SeverityMedium
CVSS4.3
Exploit probability—
ProductSonatype Nexus Repository Manager
PublishedSep 2, 2026
First seenSep 2, 2026

How to fix

Affected products

ProductAffected versionsFixed in
sonatype nexus_repository_manager3.38.0 ≤ v < 3.96.03.96.0

Check your version

Choose the product and enter the version you run to see whether it falls in the affected range.

In the Intelligence 360 plan

Attack Surface Management

See the assets tied to your domains, the technologies they run and known vulnerabilities in one list.