CVE-2022-1250: LifterLMS PayPal < 1.4.0 - Reflected Cross-Site Scripting

Severity: medium (CVSS 6.1 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.9% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2022-05-02 · updated 2026-06-17
Weakness: CWE-79

Description

The LifterLMS PayPal WordPress plugin before 1.4.0 does not sanitise and escape some parameters from the payment confirmation page before outputting them back in the page, leading to a Reflected Cross-Site Scripting issue

Affected products

chrisbadgett LifterLMS – WP LMS for eLearning, Online Courses, & Quizzes: before 1.4.0 — fixed in 1.4.0

How to fix

Upgrade to a fixed version: chrisbadgett LifterLMS – WP LMS for eLearning, Online Courses, & Quizzes 1.4.0. Check the vendor advisory for mitigations.

References

https://make.lifterlms.com/2022/04/04/lifterlms-paypal-version-1-4-0/
https://wpscan.com/vulnerability/1f8cb0b9-7447-44db-8d13-292db5b17718
https://make.lifterlms.com/2022/04/04/lifterlms-paypal-version-1-4-0/
https://wpscan.com/vulnerability/1f8cb0b9-7447-44db-8d13-292db5b17718

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