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CVE-2025-54386

Path Traversal in WASM Client Plugin

Severity
High 7.3
Published
1 Aug 2025
Last changed
17 Jun 2026
Added to UpHeron
1 Nov 2026
Fixed in
2.11.7, 2.11.28, 3.4.4, 3.4.5, 3.5.0
Also known as
GHSA-q6gg-9f92-r9wg
Sources
NVD, Project advisories (GitHub)

Description

Traefik is an HTTP reverse proxy and load balancer. In versions 2.11.27 and below, 3.0.0 through 3.4.4 and 3.5.0-rc1, a path traversal vulnerability was discovered in WASM Traefik’s plugin installation mechanism. By supplying a maliciously crafted ZIP archive containing file paths with ../ sequences, an attacker can overwrite arbitrary files on the system outside of the intended plugin…

Affected software

SoftwareAffected versions
TraefikServers and applications · cpe:a:traefik:traefik
  • Every version before 2.11.7
  • From 3.0.0 before 3.4.4
  • Version 3.5.0-rc1
  • Version 3.5.0-rc2
  • Version 3.5.0
TraefikServers and applications · github:traefik/traefik
  • Every version before 2.11.28
  • Every version before 3.4.5
  • From 3.5.0-rc1 before 3.5.0

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2025-54386
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2025-54386
  • GitHub Advisory Database https://github.com/advisories/GHSA-q6gg-9f92-r9wg
  • github.com https://github.com/traefik/traefik/security/advisories/GHSA-q6gg-9f92-r9wg