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CVE-2020-35951

CRITICAL 9.9 CVSS 3.1
Published
January 1, 2021
Last modified
June 17, 2026
NVD status
Modified
Reported by
cve@mitre.org
Weakness
CWE-306
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:H

Description

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).

Affected products and versions

  • n/a n/a — Versions not specified
  • expresstech quiz_and_survey_master — Before 7.0.1

References

  • wpscan.com https://wpscan.com/vulnerability/10348 Exploit, Third Party Advisory
  • www.wordfence.com https://www.wordfence.com/blog/2020/08/critical-vulnerabilities-patched-in-quiz-and-survey-master-plugin/ Exploit, Third Party Advisory
  • nvd.nist.gov Official NVD record