CVE-2026-17593 Security Details

CVE ID

CVE-2026-17593

CWE

CWE-470

CVE 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.

Published

Jul 28, 2026

CVSS Score & Severity

7.2High

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

EPSS Score

0.773%

Malware

malware

KEV Status

Not in KEV Catalog: No known exploits

Vulnerable Methods

org/sonatype/nexus/coreui/RealmSettingsComponent.update(Lorg/sonatype/nexus/coreui/RealmSettingsXO;)Lorg/sonatype/nexus/coreui/RealmSettingsXO;

JVM

org/sonatype/nexus/security/internal/RealmManagerImpl.resolveRealms()Ljava/util/List;

JVM

org/sonatype/security/DefaultSecuritySystem.getRealmsFromConfigSource()Ljava/util/Collection;

JVM

Affected Ecosystems

affected

Source

National Vulnerability Database

References

support.sonatype.comPROJECT