Threat intelligence

LiteSpeed Cache <= 7.7 - Unauthenticated Stored Cross-Site Scripting via QUIC.cloud CCSS/UCSS REST API Endpoints

CVE-2026-3375 · litespeed-cache

Important: Seeing this vulnerability listed does not mean your website is affected. Exposure depends on whether you run Litespeed Cache at a vulnerable version. How SiteRespond intelligence works

Vulnerability: LiteSpeed Cache <= 7.7 - Unauthenticated Stored Cross-Site Scripting via QUIC.cloud CCSS/UCSS REST API Endpoints
Affected software: litespeed-cache(Plugin)
Affected versions: ≤ 7.7
Authentication: Unauthenticated
Vulnerability type: Cross-site scripting
CVE: CVE-2026-3375
Published: 26 May 2026
CISA KEV: Not listed in CISA KEV at last catalog refresh
Impact: May allow attackers to run scripts in visitors' browsers or hijack admin sessions.
Source: Data imported from Wordfence Intelligence (advisory 40fa29f5-525a-4986-91f9-0210a7594e46). Methodology and redistribution notes

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