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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.

High CVSS 8.9
CVECVE-2026-77638
First seen2026-08-21 02:16 UTC
Disclosed2026-08-20 21:17 UTC
Last updated2026-08-21 02:16 UTC
Channel statusauto

Summary

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.

In-depth triage

No in-depth report has been generated yet (DR-003 v2 AI pipeline is under construction).

Sources

  • NVD DATABASE

Original Links

Timeline

  1. nvd_ingest NVD