CVE-2023-0538: Campaign URL Builder < 1.8.2 - Contributor+ Stored XSS

Severity: medium (CVSS 5.4 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.4% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2023-03-13 · updated 2026-06-17
Weakness: CWE-79

Description

The Campaign URL Builder WordPress plugin before 1.8.2 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

Campaign URL Builder: before 1.8.2 — fixed in 1.8.2

How to fix

Upgrade to a fixed version: Campaign URL Builder 1.8.2. Check the vendor advisory for mitigations.

References

https://wpscan.com/vulnerability/4869fdc7-4fc7-4917-bc00-b6ced9ccc871
https://wpscan.com/vulnerability/4869fdc7-4fc7-4917-bc00-b6ced9ccc871

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