CVE-2026-77584

Fixed in a distro release EPSS <1%CVSS 7.0

Tor before 0.4.9.10 did not reject a CONFLUX_LINK cell that arrives on a circuit which already has attached streams. A malicious client could send a RELAY_COMMAND_BEGIN before the CONFLUX_LINK on the same circuit, attaching an exit stream that would later end up orphan leaving a dangling circuit back-pointer and a use-after-free (UAF) when the circuit is freed. This is TROVE-2026-025.

Published 2026-08-20 · CVE record · OSV

Products: torproject tor

Distro releases