CVE-2021-24763: Perfect Survey < 1.5.2 - Unauthorised AJAX Call to Stored XSS / Survey Settings Update

Severity: high (CVSS 8.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.6% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2022-02-01 · updated 2026-06-17
Weakness: CWE-352

Description

The Perfect Survey WordPress plugin before 1.5.2 does not have proper authorisation nor CSRF checks in the save_global_setting AJAX action, allowing unauthenticated users to edit surveys and modify settings. Given the lack of sanitisation and escaping in the settings, this could also lead to a Stored Cross-Site Scripting issue which will be executed in the context of a user viewing any survey

Affected products

Perfect Survey: before 1.5.2 — fixed in 1.5.2

How to fix

Upgrade to a fixed version: Perfect Survey 1.5.2. Check the vendor advisory for mitigations.

References

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