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.

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required Low

Scope Changed

Confidentiality Impact Low

Integrity Impact Low

Availability Impact None

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
edge22 GenerateBlocks unaffected
Version Status Constraints
0 affected ≤ 2.3.0

No data.

No data.

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Advisories

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Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://plugins.trac.wordpress.org/browser/generateblocks/tags/2.2.1/includes/dynamic-tags/class-dynamic-tag-callbacks.php#L388 cve-icon
https://plugins.trac.wordpress.org/browser/generateblocks/tags/2.2.1/includes/dynamic-tags/class-register-dynamic-tag.php#L196 cve-icon
https://plugins.trac.wordpress.org/browser/generateblocks/tags/2.2.1/includes/functions.php#L2145 cve-icon
https://plugins.trac.wordpress.org/browser/generateblocks/tags/2.2.1/includes/general.php#L689 cve-icon
https://plugins.trac.wordpress.org/browser/generateblocks/tags/2.3.0/includes/dynamic-tags/class-dynamic-tag-callbacks.php#L388 cve-icon
https://plugins.trac.wordpress.org/browser/generateblocks/tags/2.3.0/includes/dynamic-tags/class-register-dynamic-tag.php#L196 cve-icon
https://plugins.trac.wordpress.org/browser/generateblocks/tags/2.3.0/includes/functions.php#L2145 cve-icon
https://plugins.trac.wordpress.org/browser/generateblocks/tags/2.3.0/includes/general.php#L689 cve-icon
https://plugins.trac.wordpress.org/changeset?reponame=&old=3625942%40generateblocks&new=3625942%40generateblocks cve-icon
https://www.wordfence.com/threat-intel/vulnerabilities/id/402e10b4-84f0-4f93-a85c-037876d26e58?source=cve cve-icon
History

Sat, 01 Aug 2026 09:45:00 +0000

Type Values Removed Values Added
First Time appeared Edge22
Edge22 generateblocks
Wordpress
Wordpress wordpress
Vendors & Products Edge22
Edge22 generateblocks
Wordpress
Wordpress wordpress

Sat, 01 Aug 2026 08:30:00 +0000

Type Values Removed Values Added
Description 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.
Title GenerateBlocks <= 2.3.0 - Authenticated (Contributor+) Stored Cross-Site Scripting via Dynamic Tag Injection in HTML Attributes
Weaknesses CWE-79
References
Metrics cvssV3_1

{'score': 6.4, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: Wordfence

Published:

Updated: 2026-08-01T07:49:45.919Z

Reserved: 2026-06-26T19:33:50.842Z

Link: CVE-2026-13458

cve-icon Vulnrichment

No data.

cve-icon NVD

No data.

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-08-01T09:30:03Z

Weaknesses