Server-side Request Forgery (SSRF) Affecting org.sonatype.nexus.plugins:nexus-blobstore-s3 package, versions [,3.88.0-08)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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- published15 Jan 2026
- disclosed14 Jan 2026
- creditKazuma Matsumoto
Introduced: 14 Jan 2026
CVE-2026-0600 (opens in a new tab)How to fix?
Upgrade org.sonatype.nexus.plugins:nexus-blobstore-s3 to version 3.88.0-08 or higher.
Overview
Affected versions of this package are vulnerable to Server-side Request Forgery (SSRF) via the proxy repository configuration. An attacker can access internal network resources and cloud metadata endpoints by configuring proxy repositories with malicious URLs. This is only exploitable if the attacker has authenticated administrator privileges.
Note: The fix introduces enhanced URL validation capabilities that can restrict requests to unauthorized network destinations. However, this protection is disabled by default and must be explicitly enabled.
Workaround
This vulnerability can be mitigated by configuring the private network validation setting to block proxy repositories from accessing private network destinations, as described in the security documentation.