CVE-2023-26777: Uptime Kuma Project Uptime Kuma

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

Cross Site Scripting vulnerability found in : louislam Uptime Kuma v.1.19.6 and before allows a remote attacker to execute arbitrary commands via the description, title, footer, and incident creation parameter of the status_page.js endpoint.

Affected products

• Uptime Kuma Project Uptime Kuma: up to and including 1.19.6

Published 2023-04-04. Last modified 2026-06-17.