What’s Vulnerable › Vulnerabilities

CVE-2026-50138: goshs: WebDAV listener ignores --read-only, --upload-only, and --no-delete mode flags

• Severity: high (CVSS 8.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-08-18 · updated 2026-10-22
• Weakness: CWE-284

Description

goshs is a SimpleHTTPServer written in Go. Prior to version 2.1.0, when `goshs` is launched with WebDAV enabled (`-w`), the mode-restriction flags `--read-only`, `--upload-only`, and `--no-delete` are enforced only on the primary HTTP port. The WebDAV port is wired straight to `golang.org/x/net/webdav.Handler` with no equivalent guard, so an authenticated WebDAV client can `PUT`, `DELETE`, `MKCOL`, `MOVE`, and `COPY` despite the operator's stated intent. Version 2.1.0 patches the issue.

Affected products

• patrickhener goshs: before 2.1.0

References

• https://github.com/goshs-labs/goshs/security/advisories/GHSA-3whc-qvhv-xqjp
• https://github.com/goshs-labs/goshs/security/advisories/GHSA-3whc-qvhv-xqjp

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