CVE-2026-91152 json
Everest Forms <= 3.6.2 - Reflected Cross-Site Scripting via 'evf_toast_type' Parameter
published 2026-10-29 11 d ago modified 2026-10-29 11 d ago also EUVD-2026-112687
- cvss
- 6.1
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.3%
- EPSS 0.3% chance of exploitation in 30 days, percentile 28%
- public exploits
- 0
- none known
Summary
The Everest Forms – Contact Form, Payment Form, Quiz, Survey & Custom Form Builder with AI plugin for WordPress is vulnerable to Reflected Cross-Site Scripting via the 'evf_toast_type' parameter in all versions up to, and including, 3.6.2 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that execute if they can successfully trick a user into performing an action such as clicking on a link. Exploitation requires the sibling evf_toast parameter to decode successfully via atob(), but this is a trivially attacker-controlled prerequisite.
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 11 d ago
Exploit prediction
0.35% chance of exploitation in the next 30 days, higher than 28% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 6.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N |
Affected products
- wpeverest Everest Forms – Contact Form, Payment Form, Quiz, Survey & Custom Form Builder with AI
Classification
- Weakness
-
- CWE-79 Improper Neutralization of Input During Web Page Generation
- Technology feeds
References
- wordfence.com /threat-intel/vulnerabilities/id/8a017198-daf1-4779-a101-dc539e263e50?source=cve
- plugins.trac.wordpress.org /browser/everest-forms/tags/3.6.1/assets/js/admin/admin.js#L22
- plugins.trac.wordpress.org /browser/everest-forms/tags/3.6.1/assets/js/admin/admin.js#L91
- plugins.trac.wordpress.org /browser/everest-forms/tags/3.6.1/includes/admin/class-evf-admin-assets.php#L376
- plugins.trac.wordpress.org /changeset/3704878/everest-forms/trunk/assets/js/admin/admin.js
Sources
- CVE List CVE-2026-91152
- NVD CVE-2026-91152
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.