XSS in Litespeedtech Litespeed Cache
CVE-2026-3375
The LiteSpeed Cache plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the /wp-json/litespeed/v1/notify_ccss and /wp-json/litespeed/v1/notify_ucss REST API endpoints in all versions up to, and including, 7.7. These endpo…
Vulnerability class: XSS (Cross-Site Scripting)
EPSS: 0.001 (24.8th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.2 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N.
Affected products
- Litespeedtech Litespeed Cache — versions 0
Weakness classification (CWE)
References
Frequently asked questions
- What is CVE-2026-3375?
- CVE-2026-3375 is a high-severity vulnerability in Litespeedtech Litespeed Cache, classified under Cross-site Scripting. CVSS score: 7.2/10. Published 2026-05-27.
- How severe is CVE-2026-3375?
- High severity. CVSS v3 base score is 7.2 out of 10.