Executive brief
Sonatype Nexus Repository 3, a platform used by software developers to store and manage software components, contains a security vulnerability in its SSL certificate management feature. An authorized user could exploit this to force the server to connect to internal or restricted systems that should not be accessible. This could allow an attacker to probe internal network infrastructure or bypass security controls, potentially leading to further unauthorized access within the corporate network.
Technical details
A Server-Side Request Forgery (SSRF) vulnerability (CWE-918) exists in Sonatype Nexus Repository 3 within the SSL Certificate Retrieval endpoint. The issue stems from insufficient validation of user-supplied input when the server attempts to fetch SSL certificates from remote hosts. An attacker with 'nexus:ssl-truststore:read' permissions can provide a malicious URL, causing the repository manager to initiate outbound network requests to internal or restricted IP addresses. This can be used for internal port scanning or interacting with internal services that are not exposed to the public internet. The vulnerability is addressed in version 3.94.0.
Affected products
- Sonatype Nexus Repository 3 3.0.0 through versions prior to 3.94.0
Timeline
- 2026-07-14: advisory
- 2026-07-14: disclosed