What is CVE-2026-40876?

CVE-2026-40876 is a high-severity vulnerability in Goshs, classified under Path Traversal. CVSS score: 8.8/10. Published 2026-04-21.

How severe is CVE-2026-40876?

High severity. CVSS v3 base score is 8.8 out of 10.

Path Traversal in Goshs

CVE-2026-40876

goshs is a SimpleHTTPServer written in Go. Prior to 2.0.0-beta.6, goshs contains an SFTP root escape caused by prefix-based path validation. An authenticated SFTP user can read from and write to filesystem paths outside the configured SFTP…

Vulnerability class: Path Traversal (Directory Traversal)

EPSS: 0.004 (35.7th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

Affected products

Goshs — versions 2.0.0
Patrickhener Goshs — versions < 2.0.0-beta.6

Weakness classification (CWE)

CWE-22 — Path Traversal

References

security-advisories@github.com (x_refsource_CONFIRM, Exploit, Vendor Advisory)

Frequently asked questions

What is CVE-2026-40876?: CVE-2026-40876 is a high-severity vulnerability in Goshs, classified under Path Traversal. CVSS score: 8.8/10. Published 2026-04-21.
How severe is CVE-2026-40876?: High severity. CVSS v3 base score is 8.8 out of 10.