CVE-2026-77587: Torproject Tor

High severity, CVSS 7.5. EPSS: 0.4% chance of exploitation in the next 30 days.

Tor before 0.4.9.11 is prone to a use-after-free (and potential double free) of a conflux object when a recovery leg revives a conflux set whose last linked leg has already been closed. A malicious exit node could use this to crash a client. This is TROVE-2026-026.

Affected products

• Torproject Tor: before 0.4.9.11 (fixed in 0.4.9.11)

Published 2026-08-20. Last modified 2026-09-16.