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CVE-2026-19857

MEDIUM 4.8 CVSS 3.1
Published
September 16, 2026
Last modified
September 16, 2026
NVD status
Deferred
Reported by
contact@wpscan.com
Weakness
CWE-74
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N

Description

The Formidable Forms WordPress plugin before 6.35 does not prevent a request-derived value from reaching the WordPress shortcode parser when it substitutes a supported token into a form's custom HTML, allowing unauthenticated visitors to have arbitrary shortcodes, with attacker-chosen attributes, executed server-side on any page displaying an affected form.

Affected WordPress components

  • Formidable Forms – WordPress Form Builder for Contact Forms, Calculators, Quizzes & More Plugin · formidable
    Confirmed match Active
    From 6.34 (including) to 6.35 (excluding)
    View on WordPress.org

A confirmed match is backed by the plugin or theme slug. A possible match is based on the product name only and should be verified.

Affected products and versions

  • Unknown Formidable Forms — From 6.34 (including) to 6.35 (excluding)

References

  • wpscan.com https://wpscan.com/vulnerability/5ff439f4-aa99-4198-b908-0cf098656cf7/
  • nvd.nist.gov Official NVD record