Vulnerability in Sonatype Nexus Repository
CVE-2026-17593
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 · last modified .
CVSS v3 metric
CVSS v3 base score 7.2 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.008 (55.8th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 56th percentile — 55.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.008 · newest: 0.008 · change: 0.000
Affected products
- Sonatype Nexus Repository — versions 2.8.0
- Sonatype Nexus Repository Manager
Weakness classification (CWE)
References
- 103e4ec9-0a87-450b-af77-479448ddef11 (Release Notes, patch)
- 103e4ec9-0a87-450b-af77-479448ddef11 (vendor-advisory, Vendor Advisory)
Frequently asked questions
- What is CVE-2026-17593?
- CVE-2026-17593 is a high-severity vulnerability in Sonatype Nexus Repository, classified under Use of Externally-Controlled Input to Select Classes or Code (Unsafe Reflection). CVSS score: 7.2/10. Published 2026-08-07.
- How severe is CVE-2026-17593?
- High severity. CVSS v3 base score is 7.2 out of 10.