The vulnertability was reported by Reini Urban via vendor's forum after discovery of zero-day exploitation.
Vulnerable component: phpMyForum
CVSSv3 score: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:F/RL:O/RC:C
CWE-ID: CWE-89 - Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')
The vulnerability allows a remote attacker to execute arbitrary SQL commands in vulnerable application.
The vulnerability exists due to insufficient sanitization of user-supplied data passed editpost.php script. A remote attacker can send a specially crafted HTTP request to vulnerable script and execute arbitrary SQL commands in web application database.
Successful exploitation may allow an attacker to gain complete control over vulnerable website.
Note: this vulnerability is being actively exploited.