The Extendify plugin for WordPress is vulnerable to Stored Cross-Site Scripting via 'styles.blocks' Block Type Key in all versions up to, and including, 3.1.6 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This is possible because registerIncoming() is hooked on rest_request_before_callbacks and runs before WordPress evaluates the route's permission_callback, meaning any unauthenticated POST, PUT, or PATCH request to a /wp/v2/global-styles route can trigger the vulnerable code path.
Metrics
Affected Vendors & Products
References
History
Sat, 03 Oct 2026 16:30:00 +0000
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ssvc
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Thu, 01 Oct 2026 20:00:00 +0000
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Extendify
Extendify extendify Wordpress-extensions Wordpress-extensions extendify |
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Extendify
Extendify extendify Wordpress-extensions Wordpress-extensions extendify |
Thu, 01 Oct 2026 05:45:00 +0000
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| Description | The Extendify plugin for WordPress is vulnerable to Stored Cross-Site Scripting via 'styles.blocks' Block Type Key in all versions up to, and including, 3.1.6 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This is possible because registerIncoming() is hooked on rest_request_before_callbacks and runs before WordPress evaluates the route's permission_callback, meaning any unauthenticated POST, PUT, or PATCH request to a /wp/v2/global-styles route can trigger the vulnerable code path. | |
| Title | Extendify <= 3.1.6 - Unauthenticated Stored Cross-Site Scripting via 'styles.blocks' Block Type Key | |
| Weaknesses | CWE-79 | |
| References |
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| Metrics |
cvssV3_1
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Status: PUBLISHED
Assigner: Wordfence
Published: 2026-10-01T05:30:55.047Z
Updated: 2026-10-03T15:42:52.738Z
Reserved: 2026-09-04T13:38:58.902Z
Link: CVE-2026-85679
Updated: 2026-10-03T15:41:16.449Z
Status : Deferred
Published: 2026-10-01T06:17:11.577
Modified: 2026-10-03T16:16:39.530
Link: CVE-2026-85679
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