CVE-2026-17593Nexus Repository - Arbitrary Class Instantiation via Unsafe Realm Configuration
Updated under an hour ago ()
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It affects Sonatype Nexus Repository. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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Free account, 1 product
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.
- CVSS
- 7.2 HIGH (v4.0, CNA)CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N
- Weakness (CWE)
- CWE-470
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Sonatype
- NVD analysis
- Analyzed
- Record last updated
- Aug 8, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Sonatype Nexus Repository sonatype:nexus_repository_manager | from 2.8.0 before 3.95.0 | CNA record |
sonatype nexus_repository_manager sonatype:nexus_repository_manager | from 2.8.0 before 3.95.0 | NVD |
References
- https://help.sonatype.com/en/sonatype-nexus-repository-3-95-0-release-notes.htmlpatch, release-notes
- https://support.sonatype.com/hc/en-us/articles/53849535836179/vendor-advisory
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.