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CVE-2026-97666

Nexus Repository 3 - Unsafe Reflection in ExtDirect Repository Endpoint

MEDIUM
6.9
CVSS Score
Published: October 15, 2026 at 03:34 PM UTC
Updated: October 16, 2026 at 07:55 PM UTC
1 product affected across 1 vendorNexus Repository Manager

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Severity
MEDIUM6.9
Exploit prediction
EPSS 0.6%
SSVC
No known exploit

Description

Sonatype Nexus Repository 3 allows an unauthenticated remote attacker to supply attacker-controlled input to a Java class loading call through an ExtDirect endpoint. This allows the attacker to learn whether specific classes are present in the application. The issue does not by itself allow code execution.

Affected

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

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)

Patch
Source: cverecord
https://help.sonatype.com/en/sonatype-nexus-repository-3-97-0-release-notes.html
Vendor Advisory
Source: cverecord
https://support.sonatype.com/hc/en-us/articles/56206649520147/

SSVC — Action Prioritization

SSVCNo known exploitAutomatablePartial impact

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

CVSS

6.9MEDIUMSonatype
Vector?

Quick Info

StatusAWAITING ANALYSIS
CWE
CWE-470

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