CVE-2026-17593

Nexus Repository - Arbitrary Class Instantiation via Unsafe Realm Configuration

Published: Aug 7, 2026Updated: Sep 22, 2026 Sources: CVE List NVDCWE-470

7.2HIGH

Description

An account holding the nexus:settings:update permission in Nexus Repository 3 (or the equivalent nexus:settings permission in the legacy Nexus Repository 2) could submit arbitrary values as realm identifiers through an internal configuration API that did not validate them against the set of registered realms. Because unrecognized entries were persisted and re-evaluated on every realm load via a legacy code path, this could result in unintended code executing inside the Nexus Repository process, and in some cases a persistent authentication lockout that was not visible through the administrative UI.

No summary for this CVE yet.

CVSS Vector Breakdown

Exploitability

AV:NAttack Vector

Network

AC:LAttack Complexity

Low

PR:HPrivileges Required

High

UI:NUser Interaction

None

Scope

S:UScope

Unchanged

Impact

C:HConfidentiality

High

I:HIntegrity

High

A:HAvailability

High

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Weaknesses

CWE-470

Affected Products

Sonatype

commercial·USaka nexus repository manager, nexus repository

Nexus RepositoryOn-premWeb App

DevTools & CI / artifact-registry

nexus repository managerOn-premWeb App

DevTools & CI / artifact-registry

Exploitability

Official Patch Available

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Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

1 technique

Execution

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References

https://help.sonatype.com/en/sonatype-nexus-repository-3-95-0-release-notes.html

help.sonatype.com

https://support.sonatype.com/hc/en-us/articles/53849535836179/

support.sonatype.com

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