6.4Medium

CVE-2026-11780Quiz and Survey Master (QSM) <= 11.2.1 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'question_title' Parameter

expresstech Quiz and Survey Master (QSM) – Quiz Maker & Survey Maker Published: 2026-08-16 07:24 (2 months ago)

Description

The Quiz and Survey Master (QSM) – Easy Quiz and Survey Maker plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'question_title' parameter in all versions up to, and including, 11.2.1 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

Weakness (CWE): CWE-79

Data: CVE.org, NVD, CISA KEV, FIRST EPSS, Ubuntu. Published as the sources state it, in English.

Affected products and versions

Vendor	Product	Versions
expresstech	Quiz and Survey Master (QSM) – Quiz Maker & Survey Maker	≤ 11.2.1

References and patches

CVSS score

6.4Medium

Source: Wordfence · CVSS 3.1

Attack vector: Network
Attack complexity: Low
Privileges required: Low
User interaction: None
Scope: Changed
Confidentiality: Low
Integrity: Low
Availability: None

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

All scores (2)

cna	CVSS 3.1	6.4Medium
security@wordfence.com	CVSS 3.1	6.4Medium

EPSS (chance of exploitation in 30 days)

0.42%

higher than 37% of all CVEs

CISA assessment (SSVC)

Exploitation: none
Automatable: no
Technical impact: partial

Timeline

ID reserved2026-06-09
Published2026-08-16 07:24
Reached IP-DB2026-10-24 23:42
Last updated2026-08-20 15:48

Assigned by (CNA): Wordfence
NVD status: Deferred

View at source: CVE.org · NVD

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