CVE-2020-22781: Etherpad

High severity, CVSS 7.5. EPSS: 1.1% chance of exploitation in the next 30 days.

In Etherpad < 1.8.3, a specially crafted URI would raise an unhandled exception in the cache mechanism and cause a denial of service (crash the instance).

Affected products

• Etherpad Etherpad: before 1.8.3 (fixed in 1.8.3)

Published 2021-04-28. Last modified 2026-06-17.