CVE-2020-35951: Critical severity expresstech quiz and survey master vulnerability
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 qsmremovefilefdquestion, which allowed unauthenticated deletions (even though it was only intended for a person to delete their own quiz-answer files).
Affected Software
Event History
Frequently Asked Questions
What is CVE-2020-35951?
CVE-2020-35951 is a critical vulnerability found in the Quiz and Survey Master plugin for WordPress, allowing users to delete arbitrary files and take control of a site.
How severe is CVE-2020-35951?
CVE-2020-35951 has a severity rating of 9.9 out of 10, making it a critical vulnerability.
How does CVE-2020-35951 affect WordPress?
CVE-2020-35951 affects the Quiz and Survey Master plugin before version 7.0.1, allowing attackers to delete important files and take a WordPress site offline.
How can I fix CVE-2020-35951?
To fix CVE-2020-35951, it is recommended to update the Quiz and Survey Master plugin to version 7.0.1 or later.
Where can I find more information about CVE-2020-35951?
More information about CVE-2020-35951 can be found at the following references: [Wordfence blog](https://www.wordfence.com/blog/2020/08/critical-vulnerabilities-patched-in-quiz-and-survey-master-plugin/) and [WPScan vulnerability report](https://wpscan.com/vulnerability/10348).