Etherpad < 1.8.3 is affected by a missing lock check which could cause a denial of service. Aggressively targeting random pad import endpoints with empty data would flatten all pads due to lack of rate limiting and missing ownership check. Source: https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-22785 Reference (s):
- https://github.com/ether/etherpad-lite/pull/3833