Auth bypass in Quiz And Survey Master (Qsm)

CVE-2026-14826

The Quiz and Survey Master (QSM) WordPress plugin before 11.2.4 does not perform a per-object ownership check on the REST routes that return a quiz's email-notification and results-page configuration, allowing users with contributor-level access and above to read the configuration, including notification recipient addresses, of quizzes created by other users.

Vulnerability class: IDOR (Insecure Direct Object Reference)

Published · last modified .

CVSS v3 metric

CVSS v3 base score 2.7 (Low). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:N/A:N.

EPSS exploit prediction

EPSS: 0.003 (20.5th percentile), scored .

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 21st percentile — 20.5% 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-2026-14826: held from 0.002 to 0.003.

EPSS over last 30 days · oldest: 0.002 · newest: 0.003 · change: +0.001

Affected products

  • Quiz And Survey Master (Qsm)

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-14826?
CVE-2026-14826 is a low-severity vulnerability in Quiz And Survey Master (Qsm), classified under Authorization Bypass Through User-Controlled Key. CVSS score: 2.7/10. Published 2026-08-19.
How severe is CVE-2026-14826?
Low severity. CVSS v3 base score is 2.7 out of 10.