QSM question settings permit Contributor stored XSS
Quiz and Survey Master before 11.2.2 outputs a question setting into an unquoted HTML attribute without proper escaping. A Contributor can store a value that breaks out of the attribute and injects JavaScript, which executes for any user who views the affected quiz. The public advisory does not disclose the setting, save endpoint, request parameter, output attribute or rendering function.
- Component
- Quiz and Survey Master (QSM)
- Plugin slug
quiz-and-survey-master-qsm- Affected
- < 11.2.2
- Safe version
11.2.2- Published
- Aug 04, 2026
This CVE was published Aug 04, 2026 and is one of 4 known issues for this plugin.
Update, patch or deactivate.
Update Quiz and Survey Master to 11.2.2 or later. Review question settings changed by delegated authors, remove unexpected markup and invalidate privileged sessions if administrators viewed affected quizzes.
A safe version is available, so updating to that version or later is the preferred remediation. If an immediate update is not practical, consider a targeted application patch or temporarily restricting the affected functionality.
Deactivate only when warranted by your risk profile, or when advised by your hosting provider in the limited circumstances where the vulnerability cannot otherwise be mitigated. If you’re unsure which action is appropriate, contact Fused or your hosting provider for guidance.
Technical description
The Quiz and Survey Master (QSM) WordPress plugin before 11.2.2 does not properly escape a question setting before outputting it into an unquoted HTML attribute, allowing users with contributor-level access and above to inject arbitrary JavaScript that executes in the browser of any user viewing the affected quiz.
CVE / CNA vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N