CVE-2020-8547

CRITICAL

phplist 3.5.0 - Unauthenticated Admin Login Bypass via Password Hash Type Juggling

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2020-8547. PoCs published by Suvadip Kar.

AI-analyzed exploit summary This is a detailed writeup explaining an authentication bypass vulnerability in phpList 3.5.0 due to PHP loose comparison. It includes vulnerable code, steps to reproduce, and a fix.

Description

phpList 3.5.0 allows type juggling for admin login bypass because == is used instead of === for password hashes, which mishandles hashes that begin with 0e followed by exclusively numerical characters.

Exploits (1)

exploitdb WRITEUP
by Suvadip Kar · phpwebappsphp
https://www.exploit-db.com/exploits/47989

This is a detailed writeup explaining an authentication bypass vulnerability in phpList 3.5.0 due to PHP loose comparison. It includes vulnerable code, steps to reproduce, and a fix.

Classification
Writeup 100%
Attack Type
Auth Bypass
Complexity
Trivial
Reliability
Reliable
Target: phpList 3.5.0
No auth needed
Prerequisites: Access to the login endpoint · Knowledge of a valid username
MITRE ATT&CK
devstral-2 · analyzed Feb 16, 2026 Full analysis →

References (1)

Core 1
Core References
Exploit, Third Party Advisory, VDB Entry x_refsource_misc
https://www.exploit-db.com/exploits/47989

Scores

CVSS v3 9.8
EPSS 0.0586
EPSS Percentile 92.2%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Details

Status published
Products (1)
phplist/phplist 3.5.0
Published Feb 03, 2020
Tracked Since Feb 18, 2026