CVE-2026-77638
CVSS Score
8.9
EPSS Score
0.0%
EPSS Percentile
0th
Tor before 0.4.9.11 is prone to a race condition where in just the right circumstances a rendezvous point could man-in-the-middle (impersonate) the onion service that the client was trying to reach.
| CWE | CWE-362 |
| Vendor | torproject |
| Product | tor |
| Published | Aug 20, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:L Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Changed
Confidentiality
High
Integrity
High
Availability
Low
Affected Versions
torproject / Tor
0.3.5.3-alpha < 0.4.9.11