What’s Vulnerable › Vulnerabilities

CVE-2026-2826: Kadence Blocks — Page Builder Toolkit for Gutenberg Editor <= 3.6.3 - Missing Authorization to Authenticated (Contributor+) Media Upload

• Severity: medium (CVSS 4.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-04-04 · updated 2026-07-21
• Weakness: CWE-862

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.

Affected products

• stellarwp Kadence Blocks — Page Builder Toolkit for Gutenberg Editor: through 3.6.3

References

• https://plugins.trac.wordpress.org/browser/kadence-blocks/tags/3.6.4/includes/class-kadence-blocks-prebuilt-library-rest-api.php#L1224
• https://www.wordfence.com/threat-intel/vulnerabilities/id/5f91df7e-5d9d-4a3a-9afc-d771106a0be6?source=cve

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