Reported vulnerability

Quiz and Survey Master (QSM) <= 11.1.0 - Unauthenticated Shortcode Injection Leading to Arbitrary Quiz Result Disclosure via Quiz Answer Text Input Fields

Q: Which versions of Quiz and Survey Master (QSM) – Quiz Maker & Survey Maker are affected?

Wordfence lists these affected versions: Start version unspecified, through 10.1.0. Use the version checker above to compare your installed release with this report.

Q: Is a fix available for Quiz and Survey Master (QSM) – Quiz Maker & Survey Maker?

Wordfence reports a fix for this issue in Quiz and Survey Master (QSM) – Quiz Maker & Survey Maker. It lists these fixed versions: 11.1.1. Back up your website and test the recommended update before applying it to your live site.

Q: Where can I find my installed plugin version?

In WordPress, open Plugins > Installed Plugins and find the version shown beneath the plugin name.

Published 16 Apr 2026

Updated 17 Apr 2026

CVE-2026-5797

Compare your installed software with the affected versions below. Follow the source’s remediation guidance and test an available update after taking a backup. A database entry describes a reported issue; it does not establish whether a particular website has been compromised.

Does this affect my version?

Check your installed version against this advisory. This compares the report’s version ranges and does not scan your website.

Wordfence advisory

medium · CVSS 5.3

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.

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

Quiz and Survey Master (QSM) – Quiz Maker & Survey Maker

Software: plugin · quiz-master-next
Affected versions: Start version unspecified, through 10.1.0
Fix availability: Fix available
Fixed versions: 11.1.1

Recommended action

Update to version 11.1.1, or a newer patched version

Further references (1)

wordfence.com/threat-intel/vulnerabilities/id/f2aa33cc-c1c4-42d4-9c2f-54648426ee4b?source=api-prod

Data sources and licences

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CVE Usage: MITRE hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute Common Vulnerabilities and Exposures (CVE®). Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy.

Read licence terms

Source: Wordfence

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Questions about this vulnerability

Which versions of Quiz and Survey Master (QSM) – Quiz Maker & Survey Maker are affected?

Wordfence lists these affected versions: Start version unspecified, through 10.1.0. Use the version checker above to compare your installed release with this report.

Is a fix available for Quiz and Survey Master (QSM) – Quiz Maker & Survey Maker?

Wordfence reports a fix for this issue in Quiz and Survey Master (QSM) – Quiz Maker & Survey Maker. It lists these fixed versions: 11.1.1. Back up your website and test the recommended update before applying it to your live site.

Where can I find my installed plugin version?

In WordPress, open Plugins > Installed Plugins and find the version shown beneath the plugin name.

Does an affected version mean my website has been hacked?

An affected version means the installed release matches a vulnerability described in this report. It does not show whether anyone has exploited it on your website. The checker compares version numbers with stored reports; it does not inspect your website.

These reports cover at least one of the same plugins, themes or WordPress core. Check each report’s affected versions separately.

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