CVE-2026-57321
HighCVSS 7.1Exploitation Probability (EPSS)
Low risk35th percentile - higher than 35% of all known CVEs
Summary
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.
Risk Assessment
An attacker with contributor role can delete critical system files or data, leading to service disruption, data loss, or full server compromise.
Recommendation
Immediately update the H5P plugin to the latest available version that fixes this vulnerability. If an update is not possible, restrict contributor permissions to the minimum or temporarily disable the file deletion functionality.
Other vulnerabilities in H5P
See all- 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-2026-112867Medium
The H5P plugin up to version 1.17.9 contains a Stored XSS vulnerability due to improper neutralization of input during web page generation. User input is not properly sanitized before being stored.
- CVE-2026-112868Medium
H5P through 1.17.9 contains an Authorization Bypass Through User-Controlled Key vulnerability that allows exploiting incorrectly configured access control security levels.
- CVE-2025-68505Medium
The H5P plugin (versions up to and including 1.16.1) contains a Missing Authorization vulnerability that allows exploitation of incorrectly configured access control security levels. This issue affects H5P from n/a through 1.16.1.
- 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.
Original NVD description (English source)
Contributor Arbitrary File Deletion in H5P <= 1.17.7 versions.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS