PT-2026-34592 · Unknown · Psitransfer

Published 2026-04-16 · Updated 2026-04-23 · CVE-2026-41180

Positive Technologies (AI Summary)

CVSS v3.1

7.5

High

Base vector

AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions PsiTransfer versions prior to 2.4.3

Description The upload PATCH flow under '/files/:uploadId' validates the mounted request path using the encoded req.path, while the downstream tus handler writes using the decoded req.params.uploadId. In deployments using a custom PSITRANSFER UPLOAD DIR where the basename prefixes a startup-loaded JavaScript path, such as conf, an unauthenticated attacker can create a config.<NODE ENV>.js file in the application root. This attacker-controlled file is executed upon the next process restart.

Recommendations Update to version 2.4.3.

Exploit

Fix

Path traversal

Weakness Enumeration

CWE-22

Related Identifiers

CVE-2026-41180

GHSA-533Q-W4G6-5586

Affected Products

Psitransfer

References · 7

• 🔥 https://github.com/psi-4ward/psitransfer/security/advisories/GHSA-533q-w4g6-5586 · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2026-41180 · Security Note
• https://osv.dev/vulnerability/GHSA-533q-w4g6-5586 · Vendor Advisory
• https://github.com/psi-4ward/psitransfer/commit/8b547bf3e09757122efa00aab90281e3915aa0c6 · Note
• https://github.com/psi-4ward/psitransfer/releases/tag/v2.4.3 · Note
• https://github.com/psi-4ward/psitransfer · Note
• https://twitter.com/CVEnew/status/2047359905472856078 · Twitter Post