SB2026050529 - Path traversal in Traefik
Published: May 5, 2026
Security Bulletin ID
SB2026050529
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Path traversal (CVE-ID: CVE-2025-54386)
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 update from vendor's website.