CVE-2026-12904
Kadence Blocks <= 3.7.7 - Insecure Direct Object Reference to Authenticated (Contributor+) Arbitrary Optimizer Data Deletion/Read/Modification via 'post_path' Parameter
Description
The Kadence Blocks – Gutenberg Blocks for Page Builder Features plugin for WordPress is vulnerable to Insecure Direct Object Reference in versions up to and including 3.7.7. This is due to a mismatch between the object used for authorization and the object actually accessed in the Optimize_Rest_Controller's create_item(), get_item(), delete_item(), and bulk_delete_items() endpoints — authorization is checked via current_user_can('edit_post'/'delete_post', $post_id) against the user-supplied post_id, while the storage layer keys analysis records on sha256($post_path) from a separately supplied, attacker-controlled post_path parameter, with no enforcement that post_path corresponds to post_id. This makes it possible for authenticated attackers, with Contributor-level access and above, to read or delete optimizer analysis records belonging to posts owned by other users by submitting their own post_id (which passes the capability check) together with the victim post's path.
INFO
Published Date :
July 1, 2026, 5:16 a.m.
Last Modified :
July 1, 2026, 1:56 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | |||||
| CVSS 3.1 | MEDIUM | [email protected] |
Solution
- Update Kadence Blocks plugin to the latest version.
- Verify plugin access controls are properly configured.
- Review user roles and permissions.
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-2026-12904.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-12904 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-2026-12904
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-2026-12904 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-12904 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.
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CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Jul. 01, 2026
Action Type Old Value New Value Added SSVC {'id': 'CVE-2026-12904', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'none'}, {'automatable': 'no'}, {'technicalImpact': 'partial'}], 'version': '2.0.3', 'timestamp': '2026-07-01T10:32:05.309457Z'} -
New CVE Received by [email protected]
Jul. 01, 2026
Action Type Old Value New Value Added Affected [{'vendor': 'stellarwp', 'product': 'Kadence Blocks — Page Builder Toolkit for Gutenberg Editor', 'versions': [{'status': 'affected', 'version': '0', 'versionType': 'semver', 'lessThanOrEqual': '3.7.7'}], 'defaultStatus': 'unaffected'}] Added Description The Kadence Blocks – Gutenberg Blocks for Page Builder Features plugin for WordPress is vulnerable to Insecure Direct Object Reference in versions up to and including 3.7.7. This is due to a mismatch between the object used for authorization and the object actually accessed in the Optimize_Rest_Controller's create_item(), get_item(), delete_item(), and bulk_delete_items() endpoints — authorization is checked via current_user_can('edit_post'/'delete_post', $post_id) against the user-supplied post_id, while the storage layer keys analysis records on sha256($post_path) from a separately supplied, attacker-controlled post_path parameter, with no enforcement that post_path corresponds to post_id. This makes it possible for authenticated attackers, with Contributor-level access and above, to read or delete optimizer analysis records belonging to posts owned by other users by submitting their own post_id (which passes the capability check) together with the victim post's path. Added CVSS V3.1 AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N Added CWE CWE-639 Added Reference https://plugins.trac.wordpress.org/browser/kadence-blocks/tags/3.6.7/includes/resources/Optimizer/Path/Path.php#L60 Added Reference https://plugins.trac.wordpress.org/browser/kadence-blocks/tags/3.6.7/includes/resources/Optimizer/Rest/Optimize_Rest_Controller.php#L153 Added Reference https://plugins.trac.wordpress.org/browser/kadence-blocks/tags/3.6.7/includes/resources/Optimizer/Rest/Optimize_Rest_Controller.php#L197 Added Reference https://plugins.trac.wordpress.org/browser/kadence-blocks/tags/3.6.7/includes/resources/Optimizer/Rest/Optimize_Rest_Controller.php#L232 Added Reference https://plugins.trac.wordpress.org/browser/kadence-blocks/tags/3.6.7/includes/resources/Optimizer/Rest/Optimize_Rest_Controller.php#L339 Added Reference https://plugins.trac.wordpress.org/browser/kadence-blocks/tags/3.6.7/includes/resources/Optimizer/Rest/Optimize_Rest_Controller.php#L383 Added Reference https://plugins.trac.wordpress.org/browser/kadence-blocks/tags/3.6.7/includes/resources/Optimizer/Rest/Optimize_Rest_Controller.php#L420 Added Reference https://plugins.trac.wordpress.org/browser/kadence-blocks/tags/3.6.7/includes/resources/Optimizer/Rest/Optimize_Rest_Controller.php#L458 Added Reference https://plugins.trac.wordpress.org/browser/kadence-blocks/tags/3.6.7/includes/resources/Optimizer/Store/Table_Store.php#L96 Added Reference https://plugins.trac.wordpress.org/browser/kadence-blocks/tags/3.7.6/includes/resources/Optimizer/Path/Path.php#L60 Added Reference https://plugins.trac.wordpress.org/browser/kadence-blocks/tags/3.7.6/includes/resources/Optimizer/Rest/Optimize_Rest_Controller.php#L153 Added Reference https://plugins.trac.wordpress.org/browser/kadence-blocks/tags/3.7.6/includes/resources/Optimizer/Rest/Optimize_Rest_Controller.php#L197 Added Reference https://plugins.trac.wordpress.org/browser/kadence-blocks/tags/3.7.6/includes/resources/Optimizer/Rest/Optimize_Rest_Controller.php#L232 Added Reference https://plugins.trac.wordpress.org/browser/kadence-blocks/tags/3.7.6/includes/resources/Optimizer/Rest/Optimize_Rest_Controller.php#L339 Added Reference https://plugins.trac.wordpress.org/browser/kadence-blocks/tags/3.7.6/includes/resources/Optimizer/Rest/Optimize_Rest_Controller.php#L383 Added Reference https://plugins.trac.wordpress.org/browser/kadence-blocks/tags/3.7.6/includes/resources/Optimizer/Rest/Optimize_Rest_Controller.php#L420 Added Reference https://plugins.trac.wordpress.org/browser/kadence-blocks/tags/3.7.6/includes/resources/Optimizer/Rest/Optimize_Rest_Controller.php#L458 Added Reference https://plugins.trac.wordpress.org/browser/kadence-blocks/tags/3.7.6/includes/resources/Optimizer/Store/Table_Store.php#L96 Added Reference https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=3590217%40kadence-blocks&new=3590217%40kadence-blocks&sfp_email=&sfph_mail= Added Reference https://www.wordfence.com/threat-intel/vulnerabilities/id/24cdd50f-742c-457c-85f7-9cccaf366e87?source=cve