CVE-2026-97666Nexus Repository 3 - Unsafe Reflection in ExtDirect Repository Endpoint

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.

Data: CVE.org, NVD, CISA KEV, FIRST EPSS, Ubuntu. Published as the sources state it, in English.

Affected products and versions

References and patches

• https://help.sonatype.com/en/sonatype-nexus-repository-3-97-0-release-notes.html patch
• https://support.sonatype.com/hc/en-us/articles/56206649520147/ vendor-advisory