CVE-2025-24961: Insecure path traversal in filesystem and filesystem-nio2 storage backends in org.gaul S3Proxy

Severity: medium (CVSS 6.0 v4.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.5% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2025-02-03 · updated 2026-06-17
Weakness: CWE-22

Description

org.gaul S3Proxy implements the S3 API and proxies requests. Users of the filesystem and filesystem-nio2 storage backends could unintentionally expose local files to users. This issue has been addressed in version 2.6.0. Users are advised to upgrade. There are no known workarounds for this vulnerability.

Affected products

gaul s3proxy: before 2.6.0

References

https://github.com/apache/jclouds/commit/b0819e0ef5e08c792a4d1724b938714ce9503aa3
https://github.com/gaul/s3proxy/commit/86b6ee4749aa163a78e7898efc063617ed171980
https://github.com/gaul/s3proxy/security/advisories/GHSA-2ccp-vqmv-4r4x

Get alerted when CVE-2025-24961 or the next vulnerability affects your stack