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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

Quick assessment

Affected
stellarwp Kadence Blocks — Page Builder Toolkit for Gutenberg Editor
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Nexcess Kadence Blocks是Nexcess公司的一款构建网站内容的框架。 Nexcess Kadence Blocks 3.7.7及之前版本存在授权问题漏洞，该漏洞源于不安全的直接对象引用，由于在Optimize_Rest_Controller的create_item()、get_item()、delete_item()和bulk_delete_items()端点中，用于授权的对象与实际访问的对象之间存在不匹配，授权检查通过current_user_can('edit_post'/'de

CVSS 4.3 · Medium EPSS 0.45% · P37

Possible ATT&CK Techniques 1 AI

T1135 · Network Share Discovery

Affected Version Matrix 1

VendorProduct Version RangeStatus
stellarwp Kadence Blocks — Page Builder Toolkit for Gutenberg Editor ≤ 3.7.7 affected
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I. Basic Information for CVE-2026-12904

Vulnerability Information
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Vulnerability Title
Kadence Blocks <= 3.7.7 - Insecure Direct Object Reference to Authenticated (Contributor+) Arbitrary Optimizer Data Deletion/Read/Modification via 'post_path' Parameter
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
通过用户控制密钥绕过授权机制
Source: CVE Program / CVE List V5
Vulnerability Title
Nexcess Kadence Blocks 授权问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Nexcess Kadence Blocks是Nexcess公司的一款构建网站内容的框架。 Nexcess Kadence Blocks 3.7.7及之前版本存在授权问题漏洞，该漏洞源于不安全的直接对象引用，由于在Optimize_Rest_Controller的create_item()、get_item()、delete_item()和bulk_delete_items()端点中，用于授权的对象与实际访问的对象之间存在不匹配，授权检查通过current_user_can('edit_post'/'de
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
stellarwp Kadence Blocks — Page Builder Toolkit for Gutenberg Editor 0 ~ 3.7.7 -

II. Public POCs for CVE-2026-12904

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III. Intelligence Information for CVE-2026-12904

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Patches & Fixes for CVE-2026-12904 (13)

Security Blog Posts for CVE-2026-12904 (2)

Same Patch Batch · stellarwp · 2026-07-01 · 4 CVEs total

CVE-2026-13246 6.4 MEDIUM GiveWP <= 4.16.0 - Authenticated (Author+) Stored Cross-Site Scripting via 'block_id' Shor
CVE-2026-11981 4.3 MEDIUM GiveWP <= 4.15.3 - Cross-Site Request Forgery
CVE-2026-12902 4.3 MEDIUM Kadence Blocks <= 3.7.7 - Missing Authorization to Authenticated (Contributor+) Arbitrary

IV. Related Vulnerabilities

Same product: Kadence Blocks — Page Builder Toolkit for Gutenberg Editor
Same vendor: stellarwp
Same weakness: CWE-639

V. Comments for CVE-2026-12904

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