{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-44467","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","state":"PUBLISHED","assignerShortName":"GitHub_M","dateReserved":"2026-05-06T15:49:25.193Z","datePublished":"2026-05-13T15:40:42.216Z","dateUpdated":"2026-05-14T18:29:10.605Z"},"containers":{"cna":{"title":"Claude Desktop: SSH Host Key Verification Bypass Allows Man-in-the-Middle Attack on Remote Sessions","problemTypes":[{"descriptions":[{"cweId":"CWE-297","lang":"en","description":"CWE-297: Improper Validation of Certificate with Host Mismatch","type":"CWE"}]},{"descriptions":[{"cweId":"CWE-322","lang":"en","description":"CWE-322: Key Exchange without Entity Authentication","type":"CWE"}]}],"metrics":[{"cvssV4_0":{"attackVector":"ADJACENT","attackComplexity":"LOW","attackRequirements":"PRESENT","privilegesRequired":"NONE","userInteraction":"PASSIVE","vulnConfidentialityImpact":"HIGH","vulnIntegrityImpact":"HIGH","vulnAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","subAvailabilityImpact":"NONE","baseScore":7.4,"baseSeverity":"HIGH","vectorString":"CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N","version":"4.0"}}],"references":[{"name":"https://github.com/anthropics/claude-code/security/advisories/GHSA-3rwf-2g6p-c2f9","tags":["x_refsource_CONFIRM"],"url":"https://github.com/anthropics/claude-code/security/advisories/GHSA-3rwf-2g6p-c2f9"}],"affected":[{"vendor":"anthropics","product":"claude-code","versions":[{"version":">= 1.2581.0, < 1.4304.0","status":"affected"}]}],"providerMetadata":{"orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","shortName":"GitHub_M","dateUpdated":"2026-05-13T15:40:42.216Z"},"descriptions":[{"lang":"en","value":"The Claude Desktop app gives you Claude Code with a graphical interface built for running multiple sessions side by side. From 1.2581.0 to before 1.4304.0, Claude Desktop's SSH remote development feature verified only whether a hostname existed in ~/.ssh/known_hosts without comparing the server's presented host key against the stored key. This allowed a network-positioned attacker to present an arbitrary SSH host key and have the connection silently accepted, enabling a man-in-the-middle attack on remote development sessions. Successful exploitation required the attacker to be in a network position to intercept SSH traffic (e.g., via ARP spoofing, rogue Wi-Fi, or DNS poisoning) and the target hostname to already have an entry in the victim's known_hosts file. This vulnerability is fixed in 1.4304.0."}],"source":{"advisory":"GHSA-3rwf-2g6p-c2f9","discovery":"UNKNOWN"}},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-05-14T18:28:58.122969Z","id":"CVE-2026-44467","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-05-14T18:29:10.605Z"}}]}}