CVE-2023-53878

HIGH

Member Login Script 3.3 - SSRF

Title source: llm

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.

Exploits (1)

exploitdb WORKING POC

by nu11secur1ty · textwebappsphp

https://www.exploit-db.com/exploits/51710

View Code ZIP pw:eip

References (3)

[Various Sources] https://www.phpjabbers.com/member-login-script/

[Exploit, Third Party Advisory] https://www.exploit-db.com/exploits/51710

[Third Party Advisory] https://www.vulncheck.com/advisories/member-login-script-client-side-request-desynchronization-vulnerability

Scores

CVSS v4 7.3

EPSS 0.0009

EPSS Percentile 25.1%

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N

Details

CWE

CWE-444

Status published

Products (1)

Phpjabbers/Member Login Script 3.3

Published Dec 15, 2025

Tracked Since Feb 18, 2026