Vulnerabilities / Nexter Blocks / WPSEC-2026-1579
Nexter Blocks <= 5.0.7 - Authenticated (Subscriber+) Missing Authorization to Backend Cache Deletion
Medium 4.3
CWE-862Fixed in 5.0.8
- ID
- WPSEC-2026-1579
- Plugin
- Nexter Blocks – Gutenberg Blocks, Page Builder & AI Website Builder (the-plus-addons-for-block-editor)
- Affected
- all versions before 5.0.8
- Remediation
- Update to 5.0.8 or later.
- CVSS 3.1
- CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
- Weakness
- CWE-862
- Usage
- Plugin Low · Affected versions Low among sites WPSec scans, 2026-10-23
- Attack surface
- Nexter Blocks on WPSec AttackSurface
- Fix released
- Published
Description
The Nexter Blocks plugin for WordPress is vulnerable to unauthorized modification of data due to a missing capability check on the tpgb_backend_clear_cache AJAX action in all versions up to, and including, 5.0.7. The action is protected only by a nonce that is printed on front-end pages. This makes it possible for authenticated attackers, with subscriber-level access and above, to delete the plugin's generated backend CSS/JS cache files.
References
- https://wpsec.com/vuln/WPSEC-2026-1579/
- https://plugins.svn.wordpress.org/the-plus-addons-for-block-editor/tags/5.0.8/
- https://wordpress.org/plugins/the-plus-addons-for-block-editor/
Published by WPSec. Provided as is, without warranty. Corrections: contact us.
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