CVE-2026-19857 — MEDIUM (4.8)

Vulnerability 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.

CVSS Score

4.8

MEDIUM

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

LOW

Integrity

LOW

Availability

NONE

Related Weaknesses (CWE)

CWE-74

References

https://wpscan.com/vulnerability/5ff439f4-aa99-4198-b908-0cf098656cf7/

FAQ

What is CVE-2026-19857?

CVE-2026-19857 is a vulnerability with a CVSS score of 4.8 (MEDIUM). 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,...

How severe is CVE-2026-19857?

CVE-2026-19857 has been rated MEDIUM with a CVSS base score of 4.8/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-19857?

Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.