{"api_version":"1","generated_at":"2026-10-14T15:50:48+00:00","cve":"CVE-2026-105429","urls":{"html":"https://cve.report/CVE-2026-105429","api":"https://cve.report/api/cve/CVE-2026-105429.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-105429","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-105429"},"summary":{"title":"NetBird client SSH config Match line injection via peer FQDN or hostname allows local command execution","description":"Improper neutralization of special elements in the NetBird client SSH configuration manager (client/ssh/config/manager.go) in NetBird versions 0.60.0 through 0.74.6 allows a malicious or compromised peer to execute arbitrary commands on other NetBird client hosts. The client writes a system-wide OpenSSH drop-in file (/etc/ssh/ssh_config.d/99-netbird.conf, or the equivalent under %PROGRAMDATA%\\ssh\\ssh_config.d on Windows) that embeds each peer FQDN or hostname inside a double-quoted Match host directive without escaping. A peer name containing a double quote breaks out of the quoted context and injects arbitrary SSH configuration directives, including exec commands, which run locally as any user on the host the next time that user runs ssh. Desktop clients on Linux, macOS, Windows and FreeBSD are affected; the Android and iOS apps are not. The issue is fixed in version 0.74.7, which accepts a peer FQDN or hostname only if it is a valid DNS name.","state":"PUBLISHED","assigner":"securin","published_at":"2026-10-14 05:16:42","updated_at":"2026-10-14 05:16:42"},"problem_types":["CWE-78","CWE-116","CWE-78 CWE-78 Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')","CWE-116 CWE-116 Improper Encoding or Escaping of 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In this version, buildHostPatterns accepts a peer FQDN or hostname only if it is a plain DNS name, and rejects quotes, whitespace, newlines, commas and SSH pattern metacharacters (pull request #6805)."}],"source":{"advisory":"GHSA-xmg2-v32j-x2hf","discovery":"EXTERNAL"},"timeline":[{"lang":"en","time":"2026-07-13T00:00:00.000Z","value":"Reported to the vendor through a GitHub Security Advisory"},{"lang":"en","time":"2026-07-15T00:00:00.000Z","value":"Vendor accepted the report"},{"lang":"en","time":"2026-07-17T00:00:00.000Z","value":"Fix released in version 0.74.7"},{"lang":"en","time":"2026-09-01T00:00:00.000Z","value":"Vendor advisory GHSA-xmg2-v32j-x2hf published"},{"lang":"en","time":"2026-10-05T00:00:00.000Z","value":"CVE ID assigned"}],"title":"NetBird client SSH config Match line injection via peer FQDN or hostname allows local command execution","x_generator":{"engine":"draft"}}},"cveMetadata":{"assignerOrgId":"33c584b5-0579-4c06-b2a0-8d8329fcab9c","assignerShortName":"securin","cveId":"CVE-2026-105429","datePublished":"2026-10-14T04:33:44.856Z","dateReserved":"2026-10-05T12:51:29.957Z","dateUpdated":"2026-10-14T04:33:44.856Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-10-14 05:16:42","lastModifiedDate":"2026-10-14 05:16:42","problem_types":["CWE-78","CWE-116","CWE-78 CWE-78 Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')","CWE-116 CWE-116 Improper Encoding or Escaping of Output"],"metrics":{"cvssMetricV40":[{"source":"33c584b5-0579-4c06-b2a0-8d8329fcab9c","type":"Secondary","cvssData":{"version":"4.0","vectorString":"CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","baseScore":8.9,"baseSeverity":"HIGH","attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"PRESENT","privilegesRequired":"HIGH","userInteraction":"NONE","vulnConfidentialityImpact":"HIGH","vulnIntegrityImpact":"HIGH","vulnAvailabilityImpact":"HIGH","subConfidentialityImpact":"HIGH","subIntegrityImpact":"HIGH","subAvailabilityImpact":"HIGH","exploitMaturity":"NOT_DEFINED","confidentialityRequirement":"NOT_DEFINED","integrityRequirement":"NOT_DEFINED","availabilityRequirement":"NOT_DEFINED","modifiedAttackVector":"NOT_DEFINED","modifiedAttackComplexity":"NOT_DEFINED","modifiedAttackRequirements":"NOT_DEFINED","modifiedPrivilegesRequired":"NOT_DEFINED","modifiedUserInteraction":"NOT_DEFINED","modifiedVulnConfidentialityImpact":"NOT_DEFINED","modifiedVulnIntegrityImpact":"NOT_DEFINED","modifiedVulnAvailabilityImpact":"NOT_DEFINED","modifiedSubConfidentialityImpact":"NOT_DEFINED","modifiedSubIntegrityImpact":"NOT_DEFINED","modifiedSubAvailabilityImpact":"NOT_DEFINED","Safety":"NOT_DEFINED","Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","valueDensity":"NOT_DEFINED","vulnerabilityResponseEffort":"NOT_DEFINED","providerUrgency":"NOT_DEFINED"}}],"cvssMetricV31":[{"source":"33c584b5-0579-4c06-b2a0-8d8329fcab9c","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H","baseScore":8,"baseSeverity":"HIGH","attackVector":"NETWORK","attackComplexity":"HIGH","privilegesRequired":"HIGH","userInteraction":"NONE","scope":"CHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH"},"exploitabilityScore":1.3,"impactScore":6}]},"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"105429","Ordinal":"1","Title":"NetBird client SSH config Match line injection via peer FQDN or ","CVE":"CVE-2026-105429","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"105429","Ordinal":"1","NoteData":"Improper neutralization of special elements in the NetBird client SSH configuration manager (client/ssh/config/manager.go) in NetBird versions 0.60.0 through 0.74.6 allows a malicious or compromised peer to execute arbitrary commands on other NetBird client hosts. The client writes a system-wide OpenSSH drop-in file (/etc/ssh/ssh_config.d/99-netbird.conf, or the equivalent under %PROGRAMDATA%\\ssh\\ssh_config.d on Windows) that embeds each peer FQDN or hostname inside a double-quoted Match host directive without escaping. A peer name containing a double quote breaks out of the quoted context and injects arbitrary SSH configuration directives, including exec commands, which run locally as any user on the host the next time that user runs ssh. Desktop clients on Linux, macOS, Windows and FreeBSD are affected; the Android and iOS apps are not. The issue is fixed in version 0.74.7, which accepts a peer FQDN or hostname only if it is a valid DNS name.","Type":"Description","Title":"NetBird client SSH config Match line injection via peer FQDN or "}]}}}