CVE-2026-14646: Nexus Repository 3 - Server-Side Request Forgery (SSRF) via HTTP Redirect

Severity: high (CVSS 7.7 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-07-14 · updated 2026-10-24
Weakness: CWE-918

Description

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.

Affected products

Sonatype Nexus Repository 3: from 3.0.0 before 3.94.0 — fixed in 3.94.0

How to fix

Upgrade to a fixed version: Sonatype Nexus Repository 3 3.94.0. Check the vendor advisory for mitigations.

References

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