Threat intelligence

WPComplete <= 2.9.5.6 - Unauthenticated Stored Cross-Site Scripting

CVE-2026-66599 · wpcomplete

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

Vulnerability: WPComplete <= 2.9.5.6 - Unauthenticated Stored Cross-Site Scripting
Affected software: wpcomplete(Plugin)
Affected versions: ≤ 2.9.5.6
Authentication: Unauthenticated
Vulnerability type: Cross-site scripting
CVE: CVE-2026-66599
Published: 20 August 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 d4404401-466e-4bc9-aa9c-8262aedcb457). Methodology and redistribution notes

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