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
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.
Details
Original advisory: https://nvd.nist.gov/vuln/detail/CVE-2026-14820
Exploitation outlook
EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.
- Low exploitation riskCVE-2026-148200.22% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 13% of all scored CVEs.
Referenced CVEs
| CVE | CSIRTS overview | External |
|---|---|---|
| CVE-2026-14820 | coverage & exploitation status | NVD · CVE.org |
Recent advisories for Quiz and Survey
A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.
- mediumCVE-2026-17571: The Fluent Forms – Customizable Contact Forms, Survey, Quiz, & Conversational Form Builder plu…nvd · 2026-08-01
- mediumCVE-2026-17567: The Fluent Forms – Customizable Contact Forms, Survey, Quiz, & Conversational Form Builder plu…nvd · 2026-07-31
- highCVE-2026-16655: The Fluent Forms – Customizable Contact Forms, Survey, Quiz, & Conversational Form Builder plu…nvd · 2026-07-29
- lowCVE-2026-14821: The Quiz and Survey Master (QSM) WordPress plugin before 11.1.5 does not perform a capability …nvd · 2026-07-28
- highCVE-2026-65454: Contributor SQL Injection in Quiz And Survey Master <= 11.2.0 versions.nvd · 2026-07-23
- mediumCVE-2026-15782: The WPForms – AI Form Builder for WordPress – Contact Forms, Payment Forms, Survey Form, Quiz …nvd · 2026-07-21
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