CVE-2026-14820 Quiz And Survey Master < 11.1.3 - Unauthenticated User Enumeration and Password Oracle via Quiz Login
Unauthenticated attackers can enumerate valid usernames and brute-force passwords due to missing rate limiting and distinct error responses in the QSM plugin.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-14820?
CVE-2026-14820 is a medium-severity vulnerability in Unknown Quiz and Survey Master (QSM), published on 27 Jul 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
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.
Weakness: CWE-200
Which versions are affected by CVE-2026-14820?
How do I fix CVE-2026-14820?
No fix has been published for CVE-2026-14820 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-14820 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-14820 exists.
Sources
Also known as GHSA-95j9-j2xw-62q9.