CVE-2021-42940: Projeqtor

Critical severity, CVSS 9.9. EPSS: 1.1% chance of exploitation in the next 30 days.

A Cross Site Scripting (XSS) vulnerability exists in Projeqtor 9.3.1 via /projeqtor/tool/saveAttachment.php, which allows an attacker to upload a SVG file containing malicious JavaScript code.

Affected products

• Projeqtor Projeqtor: up to and including 9.3.1

Published 2022-02-11. Last modified 2026-06-17.