CVE-2026-2826: CWE-862 Missing Authorization in stellarwp Kadence Blocks — Page Builder Toolkit for Gutenberg Editor
The Kadence Blocks — Page Builder Toolkit for Gutenberg Editor plugin for WordPress is vulnerable to authorization bypass in all versions up to, and including, 3.6.3. This is due to the plugin not properly verifying that a user has the `upload_files` capability in the `process_pattern` REST API endpoint. This makes it possible for authenticated attackers, with contributor level access and above, to upload images to the WordPress Media Library by supplying remote image URLs that the server downloads and creates as media attachments.
AI Analysis
Technical Summary
CVE-2026-2826 is an authorization bypass vulnerability in the Kadence Blocks — Page Builder Toolkit for Gutenberg Editor WordPress plugin, affecting all versions up to 3.6.3. The flaw arises because the plugin fails to verify that the user invoking the 'process_pattern' REST API endpoint possesses the 'upload_files' capability. This allows authenticated users with contributor or higher privileges to upload images by supplying remote URLs, which the server fetches and adds to the WordPress Media Library. The vulnerability is classified under CWE-862 (Missing Authorization). The CVSS 3.1 base score is 4.3, indicating medium severity. No patch or official fix has been published as of the data provided.
Potential Impact
Authenticated users with contributor-level access or higher can bypass intended authorization checks to upload arbitrary images to the WordPress Media Library. This could lead to unauthorized content being added to the site, potentially facilitating further malicious activity or content injection. There is no indication of direct confidentiality or availability impact. No known exploits in the wild have been reported.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, restrict contributor-level access to trusted users only and monitor for unusual media uploads. Avoid granting upload capabilities unnecessarily. Follow updates from the vendor for an official patch or mitigation instructions.
CVE-2026-2826: CWE-862 Missing Authorization in stellarwp Kadence Blocks — Page Builder Toolkit for Gutenberg Editor
Description
The Kadence Blocks — Page Builder Toolkit for Gutenberg Editor plugin for WordPress is vulnerable to authorization bypass in all versions up to, and including, 3.6.3. This is due to the plugin not properly verifying that a user has the `upload_files` capability in the `process_pattern` REST API endpoint. This makes it possible for authenticated attackers, with contributor level access and above, to upload images to the WordPress Media Library by supplying remote image URLs that the server downloads and creates as media attachments.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-2826 is an authorization bypass vulnerability in the Kadence Blocks — Page Builder Toolkit for Gutenberg Editor WordPress plugin, affecting all versions up to 3.6.3. The flaw arises because the plugin fails to verify that the user invoking the 'process_pattern' REST API endpoint possesses the 'upload_files' capability. This allows authenticated users with contributor or higher privileges to upload images by supplying remote URLs, which the server fetches and adds to the WordPress Media Library. The vulnerability is classified under CWE-862 (Missing Authorization). The CVSS 3.1 base score is 4.3, indicating medium severity. No patch or official fix has been published as of the data provided.
Potential Impact
Authenticated users with contributor-level access or higher can bypass intended authorization checks to upload arbitrary images to the WordPress Media Library. This could lead to unauthorized content being added to the site, potentially facilitating further malicious activity or content injection. There is no indication of direct confidentiality or availability impact. No known exploits in the wild have been reported.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, restrict contributor-level access to trusted users only and monitor for unusual media uploads. Avoid granting upload capabilities unnecessarily. Follow updates from the vendor for an official patch or mitigation instructions.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- Wordfence
- Date Reserved
- 2026-02-19T18:16:42.416Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 69d0cfab0a160ebd92dd86cc
Added to database: 4/4/2026, 8:45:31 AM
Last enriched: 4/4/2026, 9:00:34 AM
Last updated: 4/5/2026, 11:05:38 PM
Views: 22
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