What is CVE-2026-41180?

CVE-2026-41180 is a high-severity vulnerability in Psi-4ward Psitransfer, classified under Path Traversal. CVSS score: 7.5/10. Published 2026-04-23.

How severe is CVE-2026-41180?

High severity. CVSS v3 base score is 7.5 out of 10.

Path Traversal in Psi-4ward Psitransfer

CVE-2026-41180

PsiTransfer is an open source, self-hosted file sharing solution. Prior to version 2.4.3, the upload PATCH flow under `/files/:uploadId` validates the mounted request path using the still-encoded `req.path`, but the downstream tus handler…

Vulnerability class: Path Traversal (Directory Traversal)

EPSS: 0.001 (17.4th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H.

Affected products

Psi-4ward Psitransfer — versions < 2.4.3

Weakness classification (CWE)

CWE-22 — Path Traversal

References

https://github.com/psi-4ward/psitransfer/security/advisories/GHSA-533q-w4g6-5586 (x_refsource_CONFIRM)
https://github.com/psi-4ward/psitransfer/commit/8b547bf3e09757122efa00aab90281e3915aa0c6 (x_refsource_MISC)
https://github.com/psi-4ward/psitransfer/releases/tag/v2.4.3 (x_refsource_MISC)

Frequently asked questions

What is CVE-2026-41180?: CVE-2026-41180 is a high-severity vulnerability in Psi-4ward Psitransfer, classified under Path Traversal. CVSS score: 7.5/10. Published 2026-04-23.
How severe is CVE-2026-41180?: High severity. CVSS v3 base score is 7.5 out of 10.