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.
https://support.sonatype.com/hc/en-us/articles/53165019641363/
https://help.sonatype.com/en/sonatype-nexus-repository-3-94-0-release-notes.html
Published: 2026-07-14
Updated: 2026-09-22
Base Score: 6.8
Vector: CVSS2#AV:N/AC:L/Au:S/C:N/I:C/A:N
Severity: Medium
Base Score: 7.7
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:N
Severity: High
Base Score: 4.9
Vector: CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:N/SC:N/SI:H/SA:N
Severity: Medium
EPSS: 0.00264