Nexus Repository 3 SSRF via Unfiltered HTTP Redirect Targets
CVE-2026-14646 Published on July 14, 2026
Nexus Repository 3 - Server-Side Request Forgery (SSRF) via HTTP Redirect
Nexus Repository 3 did not apply its existing Server-Side Request Forgery (SSRF) protections to HTTP redirect targets returned by proxy repository upstream servers. Any user with read access to a proxy repository backed by an attacker-controlled or compromised upstream server including an anonymous user, if anonymous access is enabled could receive a response from an internal network address or cloud metadata endpoint as repository content, potentially exposing sensitive information such as cloud IAM credentials.
Weakness Type
What is a SSRF Vulnerability?
The web server receives a URL or similar request from an upstream component and retrieves the contents of this URL, but it does not sufficiently ensure that the request is being sent to the expected destination. By providing URLs to unexpected hosts or ports, attackers can make it appear that the server is sending the request, possibly bypassing access controls such as firewalls that prevent the attackers from accessing the URLs directly. The server can be used as a proxy to conduct port scanning of hosts in internal networks, use other URLs such as that can access documents on the system (using file://), or use other protocols such as gopher:// or tftp://, which may provide greater control over the contents of requests.
CVE-2026-14646 has been classified to as a SSRF vulnerability or weakness.
Products Associated with CVE-2026-14646
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Affected Versions
Sonatype Nexus Repository 3:- Version 3.0.0 and below 3.94.0 is affected.