CVE-2021-40921: Detector Project Detector

Medium severity, CVSS 6.1. EPSS: 0.7% chance of exploitation in the next 30 days.

Cross-site scripting (XSS) vulnerability in _contactform.inc.php in Detector 0.8.5 and below version allows remote attackers to inject arbitrary web script or HTML via the cid parameter.

Affected products

• Detector Project Detector: up to and including 0.8.5

Published 2021-10-01. Last modified 2026-06-17.