What’s Vulnerable › Vulnerabilities

CVE-2024-9169: litespeed cache <= 6.4.1 - Authenticated (Administrator+) Stored Cross-Site Scripting

• Severity: medium (CVSS 4.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2024-09-25 · updated 2026-06-17
• Weakness: CWE-79

Description

The LiteSpeed Cache plugin for WordPress is vulnerable to Stored Cross-Site Scripting via plugin debug settings in all versions up to, and including, 6.4.1 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with administrator-level permissions and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This only affects multi-site installations and installations where unfiltered_html has been disabled.

Affected products

• LiteSpeed Technologies LiteSpeed Cache: before 6.5 — fixed in 6.5

How to fix

Upgrade to a fixed version: LiteSpeed Technologies LiteSpeed Cache 6.5. Check the vendor advisory for mitigations.

References

• https://www.litespeedtech.com/products/cache-plugins/wordpress-acceleration
• https://www.wordfence.com/threat-intel/vulnerabilities/id/051a987a-944a-4898-872b-0456f0f59b27?source=cve

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