7

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. 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.
Daten sind bereitgestellt durch das CVE Programm von einer CVE Numbering Authority (CNA) (Unstrukturiert).
Herstellertorproject
≫
Produkt Tor
Default Statusunaffected
Version 0.4.8.1-alpha
Version < 0.4.9.10
Status affected
VulnDex Vulnerability Enrichment
Diese Information steht angemeldeten Benutzern zur Verfügung. Login Login
Zu dieser CVE wurde keine Warnung gefunden.
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
MITRE 7 2.2 4.7
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:H/A:L
CWE-821 Incorrect Synchronization

The product utilizes a shared resource in a concurrent manner, but it does not correctly synchronize access to the resource.

https://gitlab.torproject.org/tpo/core/tor/-/raw/tor-0.4.9.10/ChangeLog