CVE-2021-45915: Luxsoft Luxcal

Critical severity, CVSS 9.8. EPSS: 1.6% chance of exploitation in the next 30 days.

In LuxSoft LuxCal Web Calendar before 5.2.0, an unauthenticated attacker can manipulate a cookie value. This allows the attacker's session to be authenticated as any registered LuxCal user, including the site administrator.

Affected products

• Luxsoft Luxcal: before 5.2.0 (fixed in 5.2.0)

Published 2022-05-24. Last modified 2026-06-17.