CVE-2026-77638

CriticalCVSS 9.0/10Last modified Oct 18, 2026

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.

Metrics

CVSS 3.1 9.0/10CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H

Weakness enumeration

CWE-362

Affected software

VendorProductVersions
torprojectTor>= 0.3.5.3-alpha, < 0.4.9.11

References

Timeline

Published
Aug 20, 2026
Last modified
Oct 18, 2026
NVD status
Analyzed

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CVE-2026-77638: Critical severity, CVSS 9.0 | Vulnix