CVE-2023-4372: XSS
First published: Thu Jan 11 2024(Updated: )
The LiteSpeed Cache plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'esi' shortcode in versions up to, and including, 5.6 due to insufficient input sanitization and output escaping on user supplied attributes. This makes it possible for authenticated attackers with contributor-level and above permissions to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.
Credit: security@wordfence.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| LiteSpeed Technologies LiteSpeed Cache | <=5.6 |
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Reference Links
- https://github.com/litespeedtech/lscache_wp/commit/95a407d9f192b37ac6cf96d2aa50f240e3e6b2d7#diff-7b2c514b58d1b8a71655607bdfab87cedb013bc1b8927ce0b49a89ddf4a7e01cR495
- https://plugins.trac.wordpress.org/browser/litespeed-cache/tags/5.5.1/src/esi.cls.php#L480
- https://plugins.trac.wordpress.org/changeset/2977143/litespeed-cache#file348
- https://www.wordfence.com/threat-intel/vulnerabilities/id/27026f0f-c85e-4409-9973-4b9cb8a90da5?source=cve
Frequently Asked Questions
What is the severity of CVE-2023-4372?
CVE-2023-4372 has a high severity rating due to the potential for stored cross-site scripting attacks.
How do I fix CVE-2023-4372?
To fix CVE-2023-4372, you should upgrade the LiteSpeed Cache plugin to version 5.7 or later.
Who is affected by CVE-2023-4372?
Users running LiteSpeed Cache plugin versions 5.6 and earlier on WordPress are affected by CVE-2023-4372.
What type of vulnerability is CVE-2023-4372?
CVE-2023-4372 is categorized as a Stored Cross-Site Scripting vulnerability.
Can attackers exploit CVE-2023-4372 remotely?
Yes, authenticated attackers with contributor access can exploit CVE-2023-4372 to execute malicious scripts.
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