CVE-2022-21691: Onionshare

Medium severity, CVSS 4.3. EPSS: 0.7% chance of exploitation in the next 30 days.

OnionShare is an open source tool that lets you securely and anonymously share files, host websites, and chat with friends using the Tor network. In affected versions chat participants can spoof their channel leave message, tricking others into assuming they left the chatroom.

Affected products

• Onionshare Onionshare: before 2.5 (fixed in 2.5)

Published 2022-01-18. Last modified 2026-06-17.