Vulnerability in Quiz and Survey Master Plugin for WordPress
CVE-2026-14820

5.3MEDIUM

Key Information:

Vendor

WordPress
Status
Quiz And Survey Master (qsm)
Vendor
CVE Published:
27 July 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-14820?

The Quiz and Survey Master plugin for WordPress, prior to version 11.1.3, suffers from a vulnerability that allows unauthenticated attackers to perform username enumeration and brute-force attacks. The plugin lacks appropriate rate limiting and fails to log unsuccessful login attempts effectively. This enables malicious users to differentiate between valid and invalid usernames based on the responses provided, ultimately circumventing any existing brute-force protection mechanisms.

Affected Version(s)

Quiz and Survey Master (QSM) 0 < 11.1.3

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2026-14820 - Proof of Concept

References

https://wpscan.com/vulnerability/22af8c73-8147-4205-8285-...
exploitvdb-entrytechnical-description

CVSS V3.1

Score:
5.3
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
None
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

Ahmad Mubarak Alanazi
WPScan
.