CVE-2021-3783: Yourls

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

yourls is vulnerable to Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Affected products

• Yourls Yourls: up to and including 1.8.2

Published 2021-09-15. Last modified 2026-06-17.