CVE-2023-0167: GetResponse for WordPress <= 5.5.31 - Contributor+ Stored XSS

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: 2023-03-20 · updated 2026-06-17

Description

The GetResponse for WordPress plugin through 5.5.31 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

GetResponse for WordPress (WordPress plugin): before 5.5.31 — fixed in 5.5.31

How to fix

Upgrade to a fixed version: GetResponse for WordPress (WordPress plugin) 5.5.31. Check the vendor advisory for mitigations.

References

https://wpscan.com/vulnerability/fafbf666-b908-48ef-9041-fea653e9bfeb
https://wpscan.com/vulnerability/fafbf666-b908-48ef-9041-fea653e9bfeb

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