CVE-2026-40787

HIGH 7.1

WordPress Quiz And Survey Master plugin <= 11.0.0 - Cross Site Scripting (XSS) vulnerability

CVSS Score

7.1

EPSS Score

0.0%

EPSS Percentile

0th

Unauthenticated Cross Site Scripting (XSS) in Quiz And Survey Master <= 11.0.0 versions.

CWE	CWE-79
Vendor	expresstech
Product	quiz and survey master
Published	Jun 15, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Changed

Confidentiality

Low

Integrity

Low

Availability

Low

Affected Versions

ExpressTech / Quiz And Survey Master

n/a ≤ 11.0.0

References

NVD ↗ CVE.org ↗ EPSS Data ↗

patchstack.com: https://patchstack.com/database/wordpress/plugin/quiz-master-next/vulnerability/wordpress-quiz-and-survey-master-plugin-11-0-0-cross-site-scripting-xss-vulnerability?_s_id=cve

Credits

Jakub Herman | Patchstack Bug Bounty Program