In YouPHPTube 7.4, the file install/checkConfiguration.php has no access control, which leads to everyone being able to edit the configuration file, and insert malicious PHP code.
Severity
CVSS 3.1
9.8 critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS
28% chance of exploitation in the next 30 days; higher than 98% of CVEs (scores of 2026-10-31)