{"id":"CVE-2026-77638","title":"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.","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.","severity":"high","cvss":8.9,"cvssVector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:L","cwe":["CWE-362"],"vendor":"torproject","product":"tor","affected":["tor < 0.4.9.11"],"patched":["tor 0.4.9.11"],"published":"2026-08-20","updated":"2026-09-16","sourceUpdated":"2026-09-16T14:08:23.407","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-77638","references":[{"url":"https://gitlab.torproject.org/tpo/core/tor/-/raw/tor-0.4.9.11/ChangeLog","label":"cve@mitre.org"}],"tags":["nvd"],"epss":0.00193,"epssPercentile":0.092,"ingestedAt":"2026-09-16T14:57:28.002Z","slug":"CVE-2026-77638","body":"## Overview\n\nTor 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.\n\n## Affected\n\n- `tor < 0.4.9.11`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `tor 0.4.9.11`","depth":"twilight","depthScore":49,"depthScoreParts":{"impact":49,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}