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=...})
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.
INFO
Published Date :
Oct. 29, 2026, 10:17 a.m.
Last Modified :
Oct. 29, 2026, 11:17 a.m.
Remotely Exploit :
Yes !
Source :
[email protected]
Affected Products
The following products are affected by CVE-2026-91153
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
No affected product recoded yet
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | |||||
| CVSS 3.1 | MEDIUM | MITRE-CVE | ||||
| CVSS 3.1 | MEDIUM | [email protected] |
Solution
- Update the Everest Forms plugin to version 3.6.3 or later.
- Remove any exposed sensitive information from post meta.
- Review form notification email configurations.
- Monitor for further unauthorized access.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-91153.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-91153 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-91153
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-91153 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-91153 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Oct. 29, 2026
Action Type Old Value New Value Added SSVC {'id': 'CVE-2026-91153', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'none'}, {'automatable': 'yes'}, {'technicalImpact': 'partial'}], 'version': '2.0.3', 'timestamp': '2026-10-29T10:31:31.954808Z'} -
New CVE Received by [email protected]
Oct. 29, 2026
Action Type Old Value New Value Added 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. Added CVSS V3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N Added CWE CWE-200 Added Affected New affected value received. <a href="https://github.com/CVEProject/cvelistV5/blob/main/cves/2026/91xxx/CVE-2026-91153.json">CVE-2026-91153</a> Added Reference https://github.com/themegrill/everest-forms/pull/1669/changes Added Reference https://plugins.trac.wordpress.org/browser/everest-forms/tags/3.6.1/includes/class-evf-ajax.php#L2342 Added Reference https://plugins.trac.wordpress.org/browser/everest-forms/tags/3.6.1/includes/class-evf-ajax.php#L681 Added Reference https://plugins.trac.wordpress.org/browser/everest-forms/tags/3.6.1/includes/class-evf-form-task.php#L261 Added Reference https://plugins.trac.wordpress.org/browser/everest-forms/tags/3.6.1/includes/class-evf-form-task.php#L731 Added Reference https://plugins.trac.wordpress.org/browser/everest-forms/tags/3.6.1/includes/class-evf-smart-tags.php#L503 Added Reference https://plugins.trac.wordpress.org/browser/everest-forms/tags/3.6.1/includes/shortcodes/class-evf-shortcode-form.php#L370 Added Reference https://plugins.trac.wordpress.org/changeset/3747723/everest-forms/trunk/includes/class-evf-form-task.php Added Reference https://www.wordfence.com/threat-intel/vulnerabilities/id/b820a342-3aaa-4782-9d82-afe53028b72c?source=cve