PT-2023-31910 · WordPress · Add Custom Body Class

Francesco Carlucci · Published 2023-10-21 · Updated 2023-10-27 · CVE-2023-5205

Positive Technologies (AI Summary)

CVSS v3.1

6.4

Medium

Base vector

AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N

Name of the Vulnerable Software and Affected Versions Add Custom Body Class plugin for WordPress versions up to, and including, 1.4.1

Description The issue is related to Stored Cross-Site Scripting via the add custom body class value due to insufficient input sanitization and output escaping. This allows 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.

Recommendations For versions up to, and including, 1.4.1, update to a version that addresses the insufficient input sanitization and output escaping issue. As a temporary workaround, consider restricting access to the add custom body class value to minimize the risk of exploitation.

Fix

XSS

Weakness Enumeration

CWE-79

Related Identifiers

CVE-2023-5205

Affected Products

Add Custom Body Class

References · 5

• https://osv.dev/vulnerability/CVE-2023-5205 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2023-5205 · Security Note
• https://plugins.trac.wordpress.org/browser/add-custom-body-class/trunk/add-custom-body-class.php#L32 · Note
• https://t.me/cibsecurity/72728 · Telegram Post
• https://wordfence.com/threat-intel/vulnerabilities/id/9841b57b-b869-4282-8781-60538f6f269f?source=cve · Note