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CVE-2026-17593

Nexus Repository - Arbitrary Class Instantiation via Unsafe Realm Configuration

HIGH
7.2
CVSS Score
Published: August 7, 2026 at 04:07 PM UTC
Updated: September 22, 2026 at 05:21 PM UTC
2 products affected across 1 vendorNexus Repository ManagerNexus

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Severity
HIGH7.2
Exploit prediction
EPSS 0.8%
SSVC
No known exploit

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Nexus Repository Manager· Sonatype
95%
2.8.0 ≤ v < 3.95.02.102.112.11.12.11.22.11.32.11.42.12.02.12.12.13.02.14.02.14.12.14.102.14.112.14.122.14.132.14.142.14.152.14.162.14.172.14.182.14.192.14.22.14.202.14.212.14.32.14.42.14.52.14.62.14.72.14.82.14.92.15.02.15.12.15.22.8.02.8.12.92.9.12.9.23.0.03.0.13.0.23.1.03.10.03.11.03.12.03.12.13.13.03.14.03.15.03.15.13.15.23.15.33.16.03.16.13.16.23.17.03.17.13.17.23.18.03.18.13.19.03.19.13.2.03.2.13.20.03.20.13.20.23.20.33.21.03.21.13.21.23.22.03.22.13.23.03.24.03.24.13.25.03.25.13.26.03.26.13.27.03.28.03.28.13.29.03.29.13.29.23.3.03.3.13.3.23.30.03.30.13.31.03.31.13.32.03.32.13.33.03.33.13.34.03.34.13.35.03.36.03.37.03.37.13.37.23.37.33.38.03.38.13.39.03.4.03.40.03.40.13.41.03.41.13.42.03.43.03.44.03.45.03.45.13.46.03.47.03.47.13.48.03.49.03.5.03.5.13.5.23.50.03.51.03.52.03.53.03.53.13.54.03.54.13.55.03.56.03.57.03.57.13.58.03.58.13.59.03.6.03.6.13.6.23.60.03.61.03.62.03.63.03.64.03.65.03.66.03.67.03.67.13.68.03.68.13.69.03.7.03.7.13.70.03.70.13.71.03.72.03.73.03.74.03.75.03.75.13.76.03.76.13.77.03.77.13.77.23.78.03.78.13.78.23.78.33.79.03.79.13.8.03.80.03.81.03.81.13.82.03.82.13.83.03.83.13.83.23.84.03.84.13.84.23.85.03.85.13.86.03.86.13.86.23.86.33.87.03.87.13.87.23.88.03.88.13.89.03.89.13.9.03.90.03.90.13.90.23.90.33.90.43.91.03.91.13.92.03.92.13.92.23.92.33.93.03.93.13.93.23.94.03.94.1
Affected range stops below 3.95.0, so it looks safe — our inference, not a vendor statement
Nexus· Sonatype
60%
2.8.0 ≤ v < 3.95.02.8.0
Affected range stops below 3.95.0, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (2)

PatchRelease Notes
Source: cverecord
https://help.sonatype.com/en/sonatype-nexus-repository-3-95-0-release-notes.html
Vendor Advisory
Source: cverecord
https://support.sonatype.com/hc/en-us/articles/53849535836179/

SSVC — Action Prioritization

SSVCNo known exploitNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

7.2HIGHSonatype
Vector?

Quick Info

StatusANALYZED
CWE
CWE-470

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