CVE-2020-8516: Torproject Tor

Medium severity, CVSS 5.3. EPSS: 2.5% chance of exploitation in the next 30 days.

The daemon in Tor through 0.4.1.8 and 0.4.2.x through 0.4.2.6 does not verify that a rendezvous node is known before attempting to connect to it, which might make it easier for remote attackers to discover circuit information. NOTE: The network team of Tor claims this is an intended behavior and not a vulnerability

Affected products

• Torproject Tor: up to and including 0.4.1.8; from 0.4.2.0, up to and including 0.4.2.6

Published 2020-02-02. Last modified 2026-06-17.