CVE-2020-5519: Litespeedtech Openlitespeed

Critical severity, CVSS 9.8. EPSS: 1.2% chance of exploitation in the next 30 days.

The WebAdmin Console in OpenLiteSpeed before v1.6.5 does not strictly check request URLs, as demonstrated by the "Server Configuration > External App" screen.

Affected products

• Litespeedtech Openlitespeed: before 1.6.5 (fixed in 1.6.5)

Published 2020-01-06. Last modified 2026-06-17.