Threat intelligence

Wufoo Shortcode <= 1.55 - Authenticated (Contributor+) Stored Cross-Site Scripting

CVE-2026-66643 · wufoo-shortcode

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

Vulnerability: Wufoo Shortcode <= 1.55 - Authenticated (Contributor+) Stored Cross-Site Scripting
Affected software: wufoo-shortcode(Plugin)
Affected versions: ≤ 1.55
Authentication: Authenticated (see advisory title)
Vulnerability type: Cross-site scripting
CVE: CVE-2026-66643
Published: 18 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 deb7dd3c-8c49-4323-a70a-127898550f6c). Methodology and redistribution notes

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