CVE-2021-24765: Perfect Survey < 1.5.2 - Unauthenticated Stored Cross-Site Scripting

Severity: medium (CVSS 6.1 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.4% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2022-02-01 · updated 2026-06-17
Weakness: CWE-79

Description

The Perfect Survey WordPress plugin through 1.5.2 does not validate and escape the X-Forwarded-For header value before outputting it in the statistic page when the Anonymize IP setting of a survey is turned off, leading to a Stored Cross-Site Scripting issue

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

https://wpscan.com/vulnerability/4440e7ca-1a55-444d-8f6c-04153302d750
https://wpscan.com/vulnerability/4440e7ca-1a55-444d-8f6c-04153302d750

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