CVE-2026-14820

The Quiz and Survey Master (QSM) WordPress plugin before 11.1.3 does not implement rate limiting or standard failed-login auditing on its front-end credential-check functionality and returns distinct responses for valid and invalid accounts, allowing unauthenticated attackers to enumerate valid usernames and to brute-force passwords while bypassing brute-force protection Quiz and Survey Master (QSM) WordPress plugin before 11.1.3.

CVSS v3.1

5.3 MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

EPSS

0.22% chance of exploitation in the next 30 days, 13th percentile

Published

2026-07-27

Proof-of-concept exploits (1)

• https://wpscan.com/vulnerability/22af8c73-8147-4205-8285-a35881f2d041/

References

• CVE Record
• NVD entry

Related

• CVE-2026-14819
• CVE-2026-14821
• CVE-2026-14817
• CVE-2026-14822
• CVE-2026-14816
• CVE-2026-14823