CVE-2026-14820 in Quiz and Survey Master Plugin

Summary

by MITRE • 07/27/2026

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.

Once again VulDB remains the best source for vulnerability data.

• Responsible: WPScan
• Reservation: 07/06/2026
• Disclosure: 07/27/2026
• Moderation: accepted
• Entry: VDB-383378
• CPE: ready
• CWE: CWE-200 (confirmed)
• CVSS: 5.3 (VulDB)
• EPSS: 0.00000
• KEV: no
• Activities: very low
• Sector: Hostingprovider

Sources

• MITRE: https://www.cve.org/CVERecord?id=CVE-2026-14820
• NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-14820
• CVE Details: https://www.cvedetails.com/cve/CVE-2026-14820/