CVE-2026-97666 PUBLISHED

Nexus Repository 3 - Unsafe Reflection in ExtDirect Repository Endpoint

Assigner: Sonatype
Reserved: 24.09.2026 Published: 15.10.2026 Updated: 15.10.2026

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.

Metrics

CVSS 4.0

CVSS Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
CVSS Score: 6.9

Exploitability Metrics		Vulnerable System Impact Metrics		Subsequent System Impact Metrics
Attack Vector	Network	Confidentiality	Low	Confidentiality	None
Attack Complexity	Low	Integrity	None	Integrity	None
Attack Requirements	None	Availability	None	Availability	None
Privileges Required	None
User Interaction	None

CVSS 4.0

Product Status

Vendor	Sonatype
Product	Nexus Repository 3
Versions	Default: unaffected affected from 3.0.0 to 3.97.0 (excl.)

Credits

wupco123 finder

References

Problem Types

CWE-470 Use of Externally-Controlled Input to Select Classes or Code ("Unsafe Reflection") CWE