Raphael Noailles discovered and reported this issue.
Advisory: SB2012020201 - SQL Injection in TYPO3
Vulnerable component: TYPO3
CVSSv3 score: CVSS:3.1/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. A remote attacker can send a specially crafted HTTP request to vulnerable script and execute arbitrary SQL commands in the back-end database.
Successful exploitation may allow an attacker to gain complete control over vulnerable system.
Note: this vulnerability is being actively exploited.