Medium severity · published Oct 29, 2026
CVE-2026-91153
Everest Forms <= 3.6.2 - Unauthenticated Sensitive Information Exposure via Smart-Tag Injection in Smart-Tag Injection in Form Field Values ({post_meta key=...})
New
5.3
CVSS
–
EPSS
No
On KEV
Description
The Everest Forms – Contact Form, Payment Form, Quiz, Survey & Custom Form Builder with AI plugin for WordPress is vulnerable to Sensitive Information Exposure in all versions up to, and including, 3.6.2 via the process. This makes it possible for unauthenticated attackers to extract arbitrary WordPress post meta values — including license keys, API tokens, SMTP credentials, and Stripe or AWS secrets stored on any post type — via form submission notification emails or stored entries. The submission nonce is publicly rendered in every embedded form and can additionally be minted anonymously via the nopriv everest_forms_get_form_update_nonce action, meaning no account or prior authentication of any kind is required to complete the exploit.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
Low
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
EF
Everest Forms – Contact Form, Payment Form, Quiz, Survey & Custom Form Builder with AI · wpeverest
through 3.6.2 · source: vendor
Affected product
EF
Everest Forms – Contact Form, Payment Form, Quiz, Survey & Custom Form Builder with AI
wpeverest
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-91153
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-91153
www.wordfence.com
https://www.wordfence.com/threat-intel/vulnerabilities/id/b820a342-3aaa-4782-9d82-afe53028b72c?source=cve
plugins.trac.wordpress.org
https://plugins.trac.wordpress.org/browser/everest-forms/tags/3.6.1/includes/class-evf-smart-tags.php#L503
plugins.trac.wordpress.org
https://plugins.trac.wordpress.org/browser/everest-forms/tags/3.6.1/includes/class-evf-form-task.php#L731
plugins.trac.wordpress.org
https://plugins.trac.wordpress.org/browser/everest-forms/tags/3.6.1/includes/class-evf-form-task.php#L261
plugins.trac.wordpress.org
https://plugins.trac.wordpress.org/browser/everest-forms/tags/3.6.1/includes/class-evf-ajax.php#L681
plugins.trac.wordpress.org
https://plugins.trac.wordpress.org/browser/everest-forms/tags/3.6.1/includes/class-evf-ajax.php#L2342
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