What’s Vulnerable › Vulnerabilities

CVE-2023-5205: Add Custom Body Class <= 1.4.1 - Authenticated (Contributor+) Stored Cross-Site Scripting

• 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: none known
• Published: 2023-10-21 · updated 2026-06-17
• Weakness: CWE-79

Description

The Add Custom Body Class plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'add_custom_body_class' value in versions up to, and including, 1.4.1 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

Affected products

• anilankola Add Custom Body Class: through 1.4.1

References

• https://plugins.trac.wordpress.org/browser/add-custom-body-class/trunk/add-custom-body-class.php#L32
• https://www.wordfence.com/threat-intel/vulnerabilities/id/9841b57b-b869-4282-8781-60538f6f269f?source=cve
• https://plugins.trac.wordpress.org/browser/add-custom-body-class/trunk/add-custom-body-class.php#L32
• https://www.wordfence.com/threat-intel/vulnerabilities/id/9841b57b-b869-4282-8781-60538f6f269f?source=cve

Get alerted when CVE-2023-5205 or the next vulnerability affects your stack