Vulnerability · Published Dec 8, 2025 · Assigned by GitHub_M

CVE-2025-66204WBCE CMS allows brute-force protection bypass using X-Forwarded-For header

Medium 6.3

In plain English

A medium-severity security flaw in WBCE_CMS from WBCE. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 41% of all known vulnerabilities). Ready-made attack tooling exists: public proof-of-concept code.

Severity (CVSS 4.0)6.3Medium

Exploit odds (30 days)0.5%top 58.6% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack tooling1Public PoC

Official 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.

Affected products (as reported)

Vendor	Product	Versions
WBCE	WBCE_CMS	>= 1.6.4, < 1.6.5

Weakness: CWE-307, CWE-693 · Vector: CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N

References

https://github.com/WBCE/WBCE_CMS/security/advisories/GHSA-f676-f375-m7mw x_refsource_CONFIRM
https://github.com/WBCE/WBCE_CMS/commit/3765baddf27f31bbbea9c0228c452268621b25e5 x_refsource_MISC
https://github.com/WBCE/WBCE_CMS/releases/tag/1.6.5 x_refsource_MISC