Vulnerabilities / Interactive Content – H5P / WPSEC-2026-1327
Interactive Content – H5P <= 1.17.9 - Authenticated (Contributor+) Stored Cross-Site Scripting via Content Tags
Medium 6.4
CWE-79Fixed in 1.17.10
- ID
- WPSEC-2026-1327
- Plugin
- Interactive Content – H5P (h5p)
- Affected
- all versions before 1.17.10
- Remediation
- Update to 1.17.10 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 Medium among sites WPSec scans, 2026-10-21
- Attack surface
- Interactive Content – H5P on WPSec AttackSurface
- Fix released
- Published
Description
The Interactive Content – H5P plugin for WordPress is vulnerable to Stored Cross-Site Scripting via H5P content tags in all versions up to, and including, 1.17.9, due to insufficient input sanitization of tag names containing the ';' delimiter and insufficient output escaping of the tag identifier when the content list builds facet attributes. This makes it possible for authenticated attackers, with Contributor-level access and above, to inject arbitrary web scripts that will execute whenever a user, such as an administrator, views the H5P content listing in the dashboard.
References
- https://wpsec.com/vuln/WPSEC-2026-1327/
- https://plugins.svn.wordpress.org/h5p/tags/1.17.10/
- https://wordpress.org/plugins/h5p/
Published by WPSec. Provided as is, without warranty. Corrections: contact us.
This advisory as JSON or Markdown · All advisories: JSON, RSS