CVE-2021-41867: Onionshare

Medium severity, CVSS 5.3. EPSS: 1.8% chance of exploitation in the next 30 days.

An information disclosure vulnerability in OnionShare 2.3 before 2.4 allows remote unauthenticated attackers to retrieve the full list of participants of a non-public OnionShare node via the --chat feature.

Affected products

• Onionshare Onionshare: from 2.3, before 2.4 (fixed in 2.4)

Published 2021-10-04. Last modified 2026-06-17.