Cross-site scripting in edge22 GenerateBlocks
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Cross-site scripting
- Confidentiality · integrity · availability
- Low · Low · None
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-79.
Summary
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.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2026-13458
- 2026-10-03 Alias added: GHSA-vxv6-p94x-jpx2
References
Other 10
- https://www.wordfence.com/threat-intel/vulnerabilities/id/402e10b4-84f0-4f93-a85c-037876d26e58?source=cve
- https://plugins.trac.wordpress.org/browser/generateblocks/tags/2.3.0/includes/dynamic-tags/class-register-dynamic-tag.php#L196
- https://plugins.trac.wordpress.org/browser/generateblocks/tags/2.3.0/includes/functions.php#L2145
- https://plugins.trac.wordpress.org/browser/generateblocks/tags/2.3.0/includes/dynamic-tags/class-dynamic-tag-callbacks.php#L388
- https://plugins.trac.wordpress.org/browser/generateblocks/tags/2.3.0/includes/general.php#L689
- https://plugins.trac.wordpress.org/browser/generateblocks/tags/2.2.1/includes/dynamic-tags/class-register-dynamic-tag.php#L196
- https://plugins.trac.wordpress.org/browser/generateblocks/tags/2.2.1/includes/functions.php#L2145
- https://plugins.trac.wordpress.org/browser/generateblocks/tags/2.2.1/includes/dynamic-tags/class-dynamic-tag-callbacks.php#L388
- https://plugins.trac.wordpress.org/browser/generateblocks/tags/2.2.1/includes/general.php#L689
- https://plugins.trac.wordpress.org/changeset?reponame=&old=3625942%40generateblocks&new=3625942%40generateblocks
More edge22 vulnerabilities
- TI-2024-01381 WP Show Posts <= 1.1.4 - Information Exposure CVSS 3.1MEDIUM 5.3
- TI-2026-02975 Authorization bypass in edge22 GenerateBlocks CVSS 3.1MEDIUM 6.5
- TI-2025-10890 GenerateBlocks <= 2.1.1 - Improper Authorization to Authenticated (Contributor+) Arbitrary Options Disclosure CVSS 3.1MEDIUM 6.5
- TI-2023-06219 GeneratePress Premium <= 2.3.2 - Authenticated(Contributor+) Stored Cross-Site Scripting via Custom Meta CVSS 3.1MEDIUM 6.4
- TI-2026-08552 Cross-site scripting in edge22 GenerateBlocks CVSS 3.1MEDIUM 6.4
- TI-2024-03234 GP Premium <= 2.4.0 - Reflected Cross-Site Scripting CVSS 3.1MEDIUM 6.1
Sources
- CVE-2026-13458 · CVE Program
- CVE-2026-13458 · NVD
- FIRST EPSS
- GHSA-vxv6-p94x-jpx2 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences