CVE-2022-4628: Easy PayPal Buy Now Button < 1.7.4 - Contributor+ Stored XSS in Shortcode

Severity: medium (CVSS 5.4 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.5% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2023-02-13 · updated 2026-06-17

Description

The Easy PayPal Buy Now Button WordPress plugin before 1.7.4 does not validate and escape some of its shortcode attributes before outputting them back in a page/post where the shortcode is embed, which could allow users with the contributor role and above to perform Stored Cross-Site Scripting attacks

Affected products

Easy PayPal Buy Now Button: before 1.7.4 — fixed in 1.7.4

How to fix

Upgrade to a fixed version: Easy PayPal Buy Now Button 1.7.4. Check the vendor advisory for mitigations.

References

https://wpscan.com/vulnerability/6ae719da-c43c-4b3a-bb8a-efa1de20100a
https://wpscan.com/vulnerability/6ae719da-c43c-4b3a-bb8a-efa1de20100a

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