CVE-2026-66063

EUVD-2026-50082
goshs is a feature-rich single-binary file server for red teamers and developers. Prior to 2.1.5, the httpserver/updown.go multipart upload handler split part.FileName() on / but did not reject .., allowing an unauthenticated upload with filename .. to create a file outside the served tree. This issue is fixed in version 2.1.5.
Path Traversal
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
GitHub_MCNA
6.5 MEDIUM
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
Base Score
CVSS 3.x
EPSS Score
Percentile: 14%
Early Detection
Affected products identified ahead of NVD analysis through intelligence sources.
VendorProductVersionSource
goshsgoshs
𝑥
< 2.1.5
CNA
Common Weakness Enumeration
References
https://github.com/goshs-labs/goshs/commit/f3ef599e409151d1380866e47de8b1afb0bb54fa
https://github.com/goshs-labs/goshs/security/advisories/GHSA-wg2q-39h6-66x9