CVE-2026-14646: CWE-918 Server-Side Request Forgery (SSRF) in Sonatype Nexus Repository 3
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.
AI Analysis
Technical Summary
Sonatype Nexus Repository 3 version 3.0.0 contains a Server-Side Request Forgery (SSRF) vulnerability (CWE-918) because it does not apply existing SSRF protections to HTTP redirect targets returned by proxy repository upstream servers. An attacker controlling or compromising an upstream server can cause users with read access to receive responses from internal network addresses or cloud metadata endpoints, potentially exposing sensitive data like cloud IAM credentials. This affects users with read access, including anonymous users if anonymous access is enabled. There is no official remediation or patch currently documented.
Potential Impact
An attacker controlling or compromising an upstream proxy server can exploit this SSRF vulnerability to cause the Nexus Repository 3 server to fetch and return data from internal network resources or cloud metadata endpoints. This can lead to exposure of sensitive information such as cloud IAM credentials. The vulnerability affects users with read access to the proxy repository, including anonymous users if anonymous access is enabled, increasing the risk of unauthorized information disclosure.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, consider restricting read access to proxy repositories, disabling anonymous access if enabled, and carefully controlling upstream proxy repository sources to trusted servers only.
CVE-2026-14646: CWE-918 Server-Side Request Forgery (SSRF) in Sonatype Nexus Repository 3
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.
CVSS v4.0
Score 4.9medium
Affected software
pkg:maven/com.sonatype.nexus/nexus-repository-managercpe:2.3:a:sonatype:nexus_repository_manager:3.0.0:*:*:*:*:*:*:*cpe:2.3:a:sonatype:nexus_repository_manager:3.0.1:*:*:*:*:*:*:*cpe:2.3:a:sonatype:nexus_repository_manager:3.0.2:*:*:*:*:*:*:*cpe:2.3:a:sonatype:nexus_repository_manager:3.1.0:*:*:*:*:*:*:*cpe:2.3:a:sonatype:nexus_repository_manager:3.2.0:*:*:*:*:*:*:*cpe:2.3:a:sonatype:nexus_repository_manager:3.2.1:*:*:*:*:*:*:*Run on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
Sonatype Nexus Repository 3 version 3.0.0 contains a Server-Side Request Forgery (SSRF) vulnerability (CWE-918) because it does not apply existing SSRF protections to HTTP redirect targets returned by proxy repository upstream servers. An attacker controlling or compromising an upstream server can cause users with read access to receive responses from internal network addresses or cloud metadata endpoints, potentially exposing sensitive data like cloud IAM credentials. This affects users with read access, including anonymous users if anonymous access is enabled. There is no official remediation or patch currently documented.
Potential Impact
An attacker controlling or compromising an upstream proxy server can exploit this SSRF vulnerability to cause the Nexus Repository 3 server to fetch and return data from internal network resources or cloud metadata endpoints. This can lead to exposure of sensitive information such as cloud IAM credentials. The vulnerability affects users with read access to the proxy repository, including anonymous users if anonymous access is enabled, increasing the risk of unauthorized information disclosure.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, consider restricting read access to proxy repositories, disabling anonymous access if enabled, and carefully controlling upstream proxy repository sources to trusted servers only.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- Sonatype
- Date Reserved
- 2026-07-03T18:06:29.314Z
- Cvss Version
- 4.0
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a566f6568715ace43e6b26f
Added to database: 07/14/2026, 17:18:29 UTC
Last enriched: 07/15/2026, 02:18:11 UTC
Last updated: 08/28/2026, 22:52:08 UTC
Views: 95
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