An issue was discovered in the Quiz and Survey Master plugin before 7.0.1 for WordPress. It allows users to delete arbitrary files such as wp-config.php file, which could effectively take a site offline and allow an attacker to reinstall with a WordPress instance under their control. This occurred via qsm_remove_file_fd_question, which allowed unauthenticated deletions (even though it was only intended for a person to delete their own quiz-answer files).
Metrics
CVSS Version: 3.1 |
Base Score: 9.9 CRITICAL Vector: CVSS:3.1/AC:L/AV:N/A:H/C:L/I:L/PR:N/S:C/UI:N