Path traversal in Traefik - CVE-2025-54386

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Main Vulnerability Database Vulnerabilities #VU129662

Path traversal in Traefik - CVE-2025-54386

Published: May 5, 2026


Vulnerability identifier: #VU129662
CSH Severity: Low
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2025-54386
CWE-ID: CWE-22
Exploitation vector: Remote access
Exploit availability: No public exploit available
Vulnerable software:
Traefik
Software vendor:
Containous

Description

The vulnerability allows a remote user to overwrite arbitrary files and execute arbitrary code.

The vulnerability exists due to path traversal in the unzipFile function in /plugins/client.go when extracting a crafted WASM plugin ZIP archive. A remote privileged user can supply a malicious ZIP archive containing ../ sequences to overwrite arbitrary files and execute arbitrary code.

Exploitation requires plugins to be enabled and a WASM plugin asset loaded by the server, and user interaction is required.


Remediation

Install security update from vendor's website.

External links