CVE-2021-41917: Webtareas Project Webtareas

Medium severity, CVSS 5.4. EPSS: 0.6% chance of exploitation in the next 30 days.

webTareas version 2.4 and earlier allows an authenticated user to store arbitrary web script or HTML by creating or editing a client name in the clients section, due to incorrect sanitization of user-supplied data and achieve a Stored Cross-Site Scripting attack against the platform users and administrators. The affected endpoint is /clients/editclient.php, on the HTTP POST cn parameter.

Affected products

• Webtareas Project Webtareas: up to and including 2.4

Published 2021-10-08. Last modified 2026-06-17.