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CVE-2026-77638

nvd nist
Published: Aug 20, 2026Modified: Oct 18, 2026

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9.0
Vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H
Exploitability: 2.2 / Impact: 6.0
Source: NVD

Description

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.

Affected (1)

Products: Torproject: Tor
Torproject
1 product
Tor
Configuration A
1 vulnerable
Vulnerable SoftwareAffected Versions
Tor
version < 0.4.9.11

Related CWEs

CWE-362
Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
The product contains a code sequence that can run concurrently with other code, and the code sequence requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence that is operating concurrently.

References (1)

Source: cve@mitre.org
Permissions RequiredRelease NotesVendor Advisory

Timeline

No history available yet.