What is CVE-2026-66643?

CVE-2026-66643 is a medium-severity vulnerability in Wronganswersonly Wufoo Shortcode, classified under Cross-site Scripting. CVSS score: 6.5/10. Published 2026-08-18.

How severe is CVE-2026-66643?

Medium severity. CVSS v3 base score is 6.5 out of 10.

XSS in Wronganswersonly Wufoo Shortcode

CVE-2026-66643

Contributor Cross Site Scripting (XSS) in Wufoo Shortcode <= 1.55 versions.

Vulnerability class: XSS (Cross-Site Scripting)

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:L.

Affected products

Wronganswersonly Wufoo Shortcode

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

audit@patchstack.com (vdb-entry)

Frequently asked questions

What is CVE-2026-66643?: CVE-2026-66643 is a medium-severity vulnerability in Wronganswersonly Wufoo Shortcode, classified under Cross-site Scripting. CVSS score: 6.5/10. Published 2026-08-18.
How severe is CVE-2026-66643?: Medium severity. CVSS v3 base score is 6.5 out of 10.