Vulnerabilities / Gutenverse / WPSEC-2026-3123
Gutenverse <= 4.2.2 - Unauthenticated Denial of Service via Post Block Pagination Attributes
High 7.5
CWE-835Fixed in 4.2.3
- ID
- WPSEC-2026-3123
- Plugin
- Gutenverse – WordPress Blocks, Page Builder & Site Editor (gutenverse)
- Affected
- from 1.5.0 before 4.2.3
- Remediation
- Update to 4.2.3 or later.
- CVSS 3.1
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- Weakness
- CWE-835
- Usage
- Plugin Medium · Affected versions Medium among sites WPSec scans, 2026-11-14
- Attack surface
- Gutenverse on WPSec AttackSurface
- Fix released
- Published
Description
The Gutenverse plugin for WordPress is vulnerable to Denial of Service via the 'numberPost' and 'paginationNumberPost' post block attributes accepted by the public 'gutenverse-client/v1/postblock/data' REST endpoint in all versions up to, and including, 4.2.2. This is due to the attributes being cast to integers without a lower bound, so a value of zero or a negative number makes the loop in count_total_page() run without end. This makes it possible for unauthenticated attackers to tie up PHP workers and exhaust server resources by sending repeated requests with crafted block attributes.
References
- https://wpsec.com/vuln/WPSEC-2026-3123/
- https://plugins.svn.wordpress.org/gutenverse/tags/4.2.3/
- https://wordpress.org/plugins/gutenverse/
Published by WPSec. Provided as is, without warranty. Corrections: contact us.
This advisory as JSON or Markdown · All advisories: JSON, RSS