CVE-2023-53894: dulldusk phpfilemanager Weak Authentication

Vulnerability summary

CVE-2023-53894 is a critical (CVSS 9.8) Weak Authentication vulnerability in dulldusk phpfilemanager. EPSS estimates a 0.62% chance of exploitation in the next 30 days, higher than 49.1% of scored vulnerabilities. 1 public exploit is recorded.

Timeline

1. 16-12-2025
   PublishedVulnerability first disclosed.
2. 07-04-2026
   Last modifiedVulnerability information updated.

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.

• CWE-1390Weak AuthenticationThe product uses an authentication mechanism to restrict access to specific users or identities, but the mechanism does not sufficiently prove that the claimed identity is correct.