edge22 GenerateBlocks Plugin up to 2.3.0 on WordPress HTML Attributes HTML injection

Summaryinfo

A vulnerability categorized as problematic has been discovered in edge22 GenerateBlocks Plugin up to 2.3.0. This impacts an unknown function of the component HTML Attributes. The manipulation results in HTML injection. This vulnerability was named CVE-2026-13458. The attack may be performed from remote. There is no available exploit.

Detailsinfo

A vulnerability classified as problematic has been found in edge22 GenerateBlocks Plugin up to 2.3.0. Affected is an unknown functionality of the component HTML Attributes. The manipulation with an unknown input leads to a html injection vulnerability. CWE is classifying the issue as CWE-79. The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. This is going to have an impact on integrity. CVE summarizes:

The GenerateBlocks plugin for WordPress is vulnerable to Stored Cross-Site Scripting via Dynamic Tag Injection in HTML Attributes in all versions up to, and including, 2.3.0 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. A Contributor-level attacker can store the malicious payload by placing a dynamic tag such as {{post_meta key:...}} in a non-URL HTML attribute (e.g., title, aria-label, alt, or data-* attributes) of a GenerateBlocks element block, then setting the corresponding unprotected post meta key via the Custom Fields metabox to a value containing a closing quote and an injected event-handler attribute.

The advisory is available at wordfence.com. This vulnerability is traded as CVE-2026-13458 since 06/26/2026. The exploitability is told to be easy. It is possible to launch the attack remotely. Successful exploitation requires user interaction by the victim. The technical details are unknown and an exploit is not available. This vulnerability is assigned to T1059.007 by the MITRE ATT&CK project.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Type

• WordPress Plugin

Vendor

• edge22

Name

• GenerateBlocks Plugin

Version

• 2.0
• 2.1
• 2.2
• 2.3.0

CPE 2.3info

• 🔒
• 🔒
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CPE 2.2info

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If you want to get best quality of vulnerability data, you may have to visit VulDB.

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