CVE-2026-77584

Tor before 0.4.9.10 did not reject a CONFLUX_LINK cell that arrives on a circuit which already has attached streams.

Tor

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.

20. Aug 2026

Ausgewertete Quellen

• Hersteller
  https://gitlab.torproject.org/tpo/core/tor/-/raw/tor-0.4.9.10/ChangeLog
• NVD
  CVE-2026-77584