{"id":"CVE-2026-11780","title":"The Quiz and Survey Master (QSM) – Easy Quiz and Survey Maker plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'question_title' parameter in all versions up to, and including, 11.2.1 due to insufficient input san…","summary":"The Quiz and Survey Master (QSM) – Easy Quiz and Survey Maker plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'question_title' parameter in all versions up to, and including, 11.2.1 due to insufficient input san…","severity":"medium","cvss":6.4,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N","cwe":["CWE-79"],"published":"2026-08-16","updated":"2026-08-16","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-11780","references":[{"url":"https://plugins.trac.wordpress.org/browser/quiz-master-next/tags/11.0.0/php/admin/options-page-questions-tab.php#L1557","label":"security@wordfence.com"},{"url":"https://plugins.trac.wordpress.org/browser/quiz-master-next/tags/11.0.0/php/admin/options-page-questions-tab.php#L1580","label":"security@wordfence.com"},{"url":"https://plugins.trac.wordpress.org/browser/quiz-master-next/tags/11.0.0/php/rest-api.php#L301","label":"security@wordfence.com"},{"url":"https://plugins.trac.wordpress.org/browser/quiz-master-next/tags/11.0.0/php/rest-api.php#L741","label":"security@wordfence.com"},{"url":"https://plugins.trac.wordpress.org/browser/quiz-master-next/tags/11.1.4/php/admin/options-page-questions-tab.php#L1557","label":"security@wordfence.com"},{"url":"https://plugins.trac.wordpress.org/browser/quiz-master-next/tags/11.1.4/php/admin/options-page-questions-tab.php#L1580","label":"security@wordfence.com"},{"url":"https://plugins.trac.wordpress.org/browser/quiz-master-next/tags/11.1.4/php/rest-api.php#L301","label":"security@wordfence.com"},{"url":"https://plugins.trac.wordpress.org/browser/quiz-master-next/tags/11.1.4/php/rest-api.php#L741","label":"security@wordfence.com"},{"url":"https://plugins.trac.wordpress.org/changeset?reponame=&old=3609172%40quiz-master-next&new=3609172%40quiz-master-next","label":"security@wordfence.com"},{"url":"https://plugins.trac.wordpress.org/changeset?reponame=&old=3612474%40quiz-master-next&new=3612474%40quiz-master-next","label":"security@wordfence.com"},{"url":"https://www.wordfence.com/threat-intel/vulnerabilities/id/66334c29-c9d6-48b0-8d6b-bae588da0331?source=cve","label":"security@wordfence.com"}],"tags":["nvd"],"ingestedAt":"2026-08-16T13:39:06.096Z","epss":0.00298,"epssPercentile":0.22697,"slug":"CVE-2026-11780","body":"## Overview\n\nThe Quiz and Survey Master (QSM) – Easy Quiz and Survey Maker plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'question_title' parameter in all versions up to, and including, 11.2.1 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":35,"depthScoreParts":{"impact":35.2,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}