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Medium · 6.9 CVE-2023-53878 EUVD-2025-203431GHSA-3855-8298-m4gc

Member Login Script 3.3 Client-Side Request Desynchronization Vulnerability

Published Dec 15, 2025 · Updated May 12, 2026 · Assigned by VulnCheck

Description

Member Login Script 3.3 contains a client-side desynchronization vulnerability that allows attackers to manipulate HTTP request handling by exploiting Content-Length header parsing. Attackers can send crafted POST requests with smuggled secondary requests to potentially bypass server-side request processing controls.

Affected products

VendorProductAffectedFixed
Phpjabbers Member Login Script 3.3 —

References