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CVE-2026-5797

MEDIUM 5.3 CVSS 3.1
Published
April 17, 2026
Last modified
June 17, 2026
NVD status
Deferred
Reported by
security@wordfence.com
Weakness
CWE-74
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

Description

The Quiz And Survey Master plugin for WordPress is vulnerable to Arbitrary Shortcode Execution in versions up to and including 11.1.0. This is due to insufficient input sanitization and the execution of do_shortcode() on user-submitted quiz answer text. User-submitted answers pass through sanitize_text_field() and htmlspecialchars(), which only strip HTML tags but do not encode or remove shortcode brackets [ and ]. When quiz results are displayed, the plugin calls do_shortcode() on the entire results page output (including user answers), causing any injected shortcodes to be executed. This makes it possible for unauthenticated attackers to inject arbitrary WordPress shortcodes such as [qsm_result id=X] to access other users' quiz submissions without authorization, as the qsm_result shortcode lacks any authorization checks.

Affected WordPress components

  • Quiz and Survey Master (QSM) – Quiz Maker & Survey Maker Plugin · quiz-master-next
    Confirmed match Active
    Up to and including 10.1.0
    View on WordPress.org

A confirmed match is backed by the plugin or theme slug. A possible match is based on the product name only and should be verified.

Affected products and versions

  • expresstech Quiz and Survey Master (QSM) – Easy Quiz and Survey Maker — Up to and including 10.1.0

References

  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/browser/quiz-master-next/tags/10.3.5/php/classes/class-qmn-quiz-manager.php#L572
  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/browser/quiz-master-next/tags/10.3.5/php/classes/class-qsm-results-pages.php#L193
  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/browser/quiz-master-next/tags/10.3.5/php/classes/question-types/class-question-review-text.php#L15
  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/browser/quiz-master-next/tags/10.3.5/php/classes/question-types/class-question-review.php#L40
  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/browser/quiz-master-next/trunk/php/classes/class-qmn-quiz-manager.php#L572
  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/browser/quiz-master-next/trunk/php/classes/class-qsm-results-pages.php#L193
  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/browser/quiz-master-next/trunk/php/classes/question-types/class-question-review-text.php#L15
  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/browser/quiz-master-next/trunk/php/classes/question-types/class-question-review.php#L40
  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=3506094%40quiz-master-next&new=3506094%40quiz-master-next&sfp_email=&sfph_mail=
  • www.wordfence.com https://www.wordfence.com/threat-intel/vulnerabilities/id/f2aa33cc-c1c4-42d4-9c2f-54648426ee4b?source=cve
  • nvd.nist.gov Official NVD record