CVE-2023-53894 | phpfm 1.7.9 contains an authentication bypass vulnerability … | CVSS 9.8 CRITICAL

Description

phpfm 1.7.9 contains an authentication bypass vulnerability that allows attackers to log in by exploiting loose type comparison in password hash validation. Attackers can craft specific password hashes beginning with 0e or 00e to bypass authentication and upload malicious PHP files to the server.

Metadata

CVE ID: CVE-2023-53894
State: PUBLISHED
Assigner: VulnCheck
Reserved: 2025-12-16 00:10 UTC
Published: 2025-12-16 17:03 UTC
Last updated: 2026-04-07 14:07 UTC
Primary CWE: CWE-1390
Weak Authentication
Vendor / Product: Dulldusk / phpfm
Sources: cve.org · NVD

Severity & Metrics

9.8 CRITICAL CVSS 3.1

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

SSVC — CISA Coordinator

Exploitation: none
Automatable: yes
Tech. Impact: total

Affected products (1)

Vendor	Product	Platform	Versions
Dulldusk	phpfm	—	1.7.9

Weakness (CWE)

CWE	Source	Description
CWE-1390	cna	Weak Authentication

CVSS scores (2)

Score	Severity	Version	Source	Vector
9.8	CRITICAL	3.1	cna	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
9.3	CRITICAL	4.0	cna	CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

References (3)

ExploitDB-51594 https://www.exploit-db.com/exploits/51594
phpFileManager Product Webpage https://www.dulldusk.com/phpfm/
VulnCheck Advisory: phpfm 1.7.9 Authentication Bypass via Type Juggling Vulnerability https://www.vulncheck.com/advisories/phpfm-authentication-bypass-via-type-juggling-vulnerability