CVE-2022-4751: Word Balloon < 4.19.3 - Contributor+ Stored XSS via 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: 2023-01-23 · updated 2026-06-17

Description

The Word Balloon WordPress plugin before 4.19.3 does not validate and escape some of its shortcode attributes before outputting them back in the page, which could allow users with a role as low as contributor to perform Stored Cross-Site Scripting attacks which could be used against high privilege users such as admins.

Affected products

Word Balloon: before 4.19.3 — fixed in 4.19.3

How to fix

Upgrade to a fixed version: Word Balloon 4.19.3. Check the vendor advisory for mitigations.

References

https://wpscan.com/vulnerability/dd5cc04a-042d-402a-ab7a-96aff3d57478
https://wpscan.com/vulnerability/dd5cc04a-042d-402a-ab7a-96aff3d57478

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