CVE-2025-66204

HIGH

WBCE CMS < 1.6.5 - Brute-Force Protection Bypass via X-Forwarded-For Header

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2025-66204. PoCs published by lukasz-rybak.

AI-analyzed exploit summary The repository contains a functional Python script that demonstrates a brute-force protection bypass in WBCE CMS by manipulating the X-Forwarded-For header to rotate spoofed IPs, allowing unlimited login attempts.

Description

WBCE CMS is a content management system. Version 1.6.4 contains a brute-force protection bypass where an attacker can indefinitely reset the counter by modifying `X-Forwarded-For` on each request, gaining unlimited password guessing attempts, effectively bypassing all brute-force protection. The application fully trusts the `X-Forwarded-For` header without validating it or restricting its usage. This issue is fixed in version 1.6.5.

Exploits (1)

nomisec WORKING POC
by lukasz-rybak · poc
https://github.com/lukasz-rybak/CVE-2025-66204

The repository contains a functional Python script that demonstrates a brute-force protection bypass in WBCE CMS by manipulating the X-Forwarded-For header to rotate spoofed IPs, allowing unlimited login attempts.

Classification
Working Poc 100%
Attack Type
Auth Bypass
Complexity
Trivial
Reliability
Reliable
Target: WBCE CMS 1.6.4
No auth needed
Prerequisites: Access to the login endpoint · Ability to send HTTP requests with custom headers
devstral-2 · analyzed Apr 12, 2026 Full analysis →

Scores

CVSS v3 8.1
EPSS 0.0040
EPSS Percentile 31.7%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

CISA SSVC

Vulnrichment
Exploitation poc
Automatable no
Technical Impact partial

Details

CWE
CWE-693 CWE-307
Status published
Products (1)
wbce/wbce_cms < 1.6.5
Published Dec 09, 2025
Tracked Since Feb 18, 2026