Nexus Repository 3 JEXL Sandbox Bypass Exposes JVM Class Metadata
CVE-2026-17595 Published on August 7, 2026
Nexus Repository 3 - JEXL Content Selector Sandbox Property-Read Bypass
Nexus Repository 3 did not fully sandbox JEXL expressions used in Content Selectors. An account holding the nexus:selectors:create permission could construct an expression that read Java object properties not intended to be exposed to the expression engine, disclosing internal JVM class metadata such as class and classloader names. This issue does not permit method invocation, object construction, or arbitrary code execution. This has been fixed by restricting property access in the JEXL sandbox to the intended data types.
Vulnerability Analysis
CVE-2026-17595 can be exploited with network access, and requires small amount of user privileges. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to have no impact on confidentiality and integrity and availability.
Weakness Type
Exposure of Sensitive System Information to an Unauthorized Control Sphere
The application does not properly prevent sensitive system-level information from being accessed by unauthorized actors who do not have the same level of access to the underlying system as the application does.
Products Associated with CVE-2026-17595
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Affected Versions
Sonatype Nexus Repository 3:- Version 3.15.0 and below 3.95.0 is affected.