Vulnerability Analysis
Formidable Forms < 6.35 - Unauthenticated Arbitrary Shortcode Execution via [entry_key] Custom HTML Token
CVE-2026-19857
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.
No Active Exploit Signals
CVSS Base Score
4.8
MEDIUM
Exploitability:2.3
Impact Score:2.6
Temporal Score:-
EPSS:0.19%
Threat Intelligence Signals
CISA KEV
No
KEV Date Added
—
Ransomware Use
—
KEV Due Date
—
VulnCheck In-the-Wild
No
Nuclei Template
No
EPSS Score
0.188%
EPSS Percentile
8.7th pct
GHSA ID
GitHub Severity
MODERATE
SSVC Exploitation
Proof of Concept
SSVC Automatable
No
Vulnerability Class
—
Identity & Timeline
| Status | - |
| Assigning Authority | - |
| Discovered Via | - |
| Record Completeness | - |
| CVSS Version / Source | - |
| Reserved | - |
| Published | - |
| Patch Date (date_public) | - |
| Exploit DB Date | - |
| First GitHub PoC Date | - |
| Last Updated | - |
| Time to Patch (Days to fix) | - |
| Exploit Release Gap | - |
| PoC Release Gap | - |
| Exploit DB References | None identified |
Affected Products & Versions
| Vendor | Product | Affected Versions |
|---|---|---|
| No affected products specified. | ||
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