Bug 2520792 (CVE-2026-77638) - CVE-2026-77638 tor: Tor: Onion Service Impersonation via Race Condition
Summary: CVE-2026-77638 tor: Tor: Onion Service Impersonation via Race Condition
Keywords:
Status: NEW
Alias: CVE-2026-77638
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On: 2521284 2521285
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-08-20 21:24 UTC by OSIDB Bzimport
Modified: 2026-08-22 11:47 UTC (History)
0 users

Fixed In Version:
Clone Of:
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Last Closed:
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Description OSIDB Bzimport 2026-08-20 21:24:07 UTC 
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.
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