CVE-2025-54386

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 directory. This can lead to remote code execution (RCE), privilege escalation, persistence, or denial of service. This is fixed in versions 2.11.28, 3.4.5 and 3.5.0.

CVSS v3.1 Score

9.8

CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Weakness Type (CWE)

CWE-22 Path Traversal

CWE-30 CWE-30

Affected Products

Vendor	Product	Versions
traefik	traefik	< 2.11.7
traefik	traefik	3.0.0 — 3.4.4
traefik	traefik	All
traefik	traefik	All
traefik	traefik	All

References

Advisories & Patches

https://github.com/traefik/plugin-service/pull/71 https://github.com/traefik/plugin-service/pull/72 https://github.com/traefik/traefik/commit/5ef853a0c53068f69a6c229a5815a0dc6e0a8800 https://github.com/traefik/traefik/pull/11911 https://github.com/traefik/traefik/security/advisories/GHSA-q6gg-9f92-r9wg

Other References

https://github.com/traefik/traefik/releases/tag/v2.11.28

Frequently Asked Questions

What is CVE-2025-54386? +

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 directory. This can lead to remote code execution (RCE), privilege escalation, persistence, or denial of service. This is fixed in versions 2.11.28, 3.4.5 and 3.5.0. It has a CVSS v3.1 base score of 9.8 (CRITICAL).

How severe is CVE-2025-54386? +

CVE-2025-54386 has a CVSS v3.1 score of 9.8 out of 10, rated CRITICAL. This is a critical vulnerability that should be patched immediately.

What products are affected by CVE-2025-54386? +

CVE-2025-54386 affects products from traefik, specifically: traefik. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2025-54386? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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