XSS in Quiz And Survey Master (Qsm)

CVE-2026-14824

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.

Vulnerability class: XSS (Cross-Site Scripting)

Published · last modified .

CVSS v3 metric

CVSS v3 base score 4.8 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N.

EPSS exploit prediction

EPSS: 0.002 (15.4th percentile), scored .

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 15th percentile — 15.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2026-14824: held from 0.002 to 0.002.

EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: 0.000

Affected products

  • Quiz And Survey Master (Qsm) — versions 0

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-14824?
CVE-2026-14824 is a medium-severity vulnerability in Quiz And Survey Master (Qsm), classified under Cross-site Scripting. CVSS score: 4.8/10. Published 2026-08-04.
How severe is CVE-2026-14824?
Medium severity. CVSS v3 base score is 4.8 out of 10.