H5P vulnerabilities

3 known CVE vulnerabilities in H5P, translated and rated.

CVE-2026-56006High
Versions of H5P up to 1.17.6 are vulnerable to unauthenticated Cross Site Scripting (XSS). An attacker can exploit this vulnerability to inject malicious JavaScript code.
CVE-2026-57321High
The H5P plugin version 1.17.7 and earlier contains a vulnerability allowing a contributor to delete arbitrary files on the server. The flaw is due to insufficient permission validation during file deletion operations.
CVE-2025-62951Medium
The H5P plugin (icc0rz) contains a Stored Cross-site Scripting (XSS) vulnerability due to improper neutralization of input during web page generation. This issue affects versions from n/a through <= 1.16.0.

Vulnerability data from NVD (NIST) · CISA KEV · EPSS