PT-2026-33411 · Expresstech · Quiz/Survey Master (Qsm) – Easy Quiz/Survey Maker

Rafshanzani Suhada

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Published

2026-04-17

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Updated

2026-04-17

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CVE-2026-5797

CVSS v3.1

5.3

Medium

AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
The Quiz And Survey Master plugin for WordPress is vulnerable to Arbitrary Shortcode Execution in versions up to and including 11.1.0. This is due to insufficient input sanitization and the execution of do shortcode() on user-submitted quiz answer text. User-submitted answers pass through sanitize text field() and htmlspecialchars(), which only strip HTML tags but do not encode or remove shortcode brackets [ and ]. When quiz results are displayed, the plugin calls do shortcode() on the entire results page output (including user answers), causing any injected shortcodes to be executed. This makes it possible for unauthenticated attackers to inject arbitrary WordPress shortcodes such as [qsm result id=X] to access other users' quiz submissions without authorization, as the qsm result shortcode lacks any authorization checks.

Fix

Special Elements Injection

Weakness Enumeration

CWE-74

Related Identifiers

CVE-2026-5797

Affected Products

Quiz/Survey Master (Qsm) – Easy Quiz/Survey Maker