Top 10 <= 4.5.0 - Authenticated (Contributor+) Stored Cross-Site Scripting via Popular Posts Block thumb_size Attribute
- ID
- WPSEC-2026-0207
- Plugin
- WebberZone Top 10 — Popular Posts (top-10)
- Affected
- all versions before 4.5.1
- Remediation
- Update to 4.5.1 or later.
- CVSS 3.1
- CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
- Weakness
- CWE-79
- Usage
- Plugin Medium · Affected versions Low among sites WPSec scans, 2026-10-22
- Attack surface
- Top 10 on WPSec AttackSurface
- Fix released
- Published
Description
The WebberZone Top 10 plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the thumb_size attribute of the Popular Posts block in all versions up to, and including, 4.5.0 due to insufficient input sanitization and output escaping. When thumb_size is supplied as an array of width and height values (for example through the block's other attributes setting), those values are written unescaped into the width, height or style attributes of the thumbnail image tag. 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.
References
- https://wpsec.com/vuln/WPSEC-2026-0207/
- https://plugins.svn.wordpress.org/top-10/tags/4.5.1/
- https://wordpress.org/plugins/top-10/
Published by WPSec. Provided as is, without warranty. Corrections: contact us.
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