{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-62943", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-07-14T22:32:17.731Z", "datePublished": "2026-09-18T16:24:48.513Z", "dateUpdated": "2026-09-18T16:24:48.513Z"}, "containers": {"cna": {"title": "btrbk: SSH Command Filter Bypass in ssh_filter_btrbk.sh", "problemTypes": [{"descriptions": [{"cweId": "CWE-78", "lang": "en", "description": "CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')", "type": "CWE"}]}], "metrics": [{"cvssV4_0": {"attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "LOW", "userInteraction": "NONE", "vulnConfidentialityImpact": "HIGH", "vulnIntegrityImpact": "HIGH", "vulnAvailabilityImpact": "HIGH", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "subAvailabilityImpact": "NONE", "baseScore": 8.7, "baseSeverity": "HIGH", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N", "version": "4.0"}}], "references": [{"name": "https://github.com/digint/btrbk/security/advisories/GHSA-pf45-7g54-65h5", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/digint/btrbk/security/advisories/GHSA-pf45-7g54-65h5"}, {"name": "https://github.com/digint/btrbk/commit/29ca3c093205395bdeb9dd98677ab4139c458aec", "tags": ["x_refsource_MISC"], "url": "https://github.com/digint/btrbk/commit/29ca3c093205395bdeb9dd98677ab4139c458aec"}, {"name": "https://github.com/digint/btrbk/releases/tag/v0.32.7", "tags": ["x_refsource_MISC"], "url": "https://github.com/digint/btrbk/releases/tag/v0.32.7"}], "affected": [{"vendor": "digint", "product": "btrbk", "versions": [{"version": ">= 0.29.0, < 0.32.7", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-09-18T16:24:48.513Z"}, "descriptions": [{"lang": "en", "value": "btrbk is a tool for creating snapshots and remote backups of Btrfs subvolumes. From 0.29.0 until 0.32.7, btrbk's ssh_filter_btrbk.sh constructs allow_stream_match with a start anchor but without an end-of-string anchor for the complete command. A user restricted through an authorized_keys forced command can append a trailing pipe command after a valid btrbk command prefix, bypassing the allowlist and executing arbitrary commands with the privileges of the backup-target SSH account. Deployments that do not use ssh_filter_btrbk.sh in authorized_keys are not affected. This issue is fixed in version 0.32.7."}], "source": {"advisory": "GHSA-pf45-7g54-65h5", "discovery": "UNKNOWN"}}}}

{}

{"affected": [{"affectedData": [{"product": "btrbk", "vendor": "digint", "versions": [{"status": "affected", "version": ">= 0.29.0, < 0.32.7"}]}], "source": "[email protected]"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "btrbk is a tool for creating snapshots and remote backups of Btrfs subvolumes. From 0.29.0 until 0.32.7, btrbk's ssh_filter_btrbk.sh constructs allow_stream_match with a start anchor but without an end-of-string anchor for the complete command. A user restricted through an authorized_keys forced command can append a trailing pipe command after a valid btrbk command prefix, bypassing the allowlist and executing arbitrary commands with the privileges of the backup-target SSH account. Deployments that do not use ssh_filter_btrbk.sh in authorized_keys are not affected. This issue is fixed in version 0.32.7."}], "id": "CVE-2026-62943", "lastModified": "2026-09-18T17:16:59.167", "metrics": {"cvssMetricV40": [{"cvssData": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "NONE", "attackVector": "NETWORK", "availabilityRequirement": "NOT_DEFINED", "baseScore": 8.7, "baseSeverity": "HIGH", "confidentialityRequirement": "NOT_DEFINED", "exploitMaturity": "NOT_DEFINED", "integrityRequirement": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "privilegesRequired": "LOW", "providerUrgency": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "userInteraction": "NONE", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/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", "version": "4.0", "vulnAvailabilityImpact": "HIGH", "vulnConfidentialityImpact": "HIGH", "vulnIntegrityImpact": "HIGH", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "source": "[email protected]", "type": "Secondary"}]}, "published": "2026-09-18T17:16:59.167", "references": [{"source": "[email protected]", "url": "https://github.com/digint/btrbk/commit/29ca3c093205395bdeb9dd98677ab4139c458aec"}, {"source": "[email protected]", "url": "https://github.com/digint/btrbk/releases/tag/v0.32.7"}, {"source": "[email protected]", "url": "https://github.com/digint/btrbk/security/advisories/GHSA-pf45-7g54-65h5"}], "sourceIdentifier": "[email protected]", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-78"}], "source": "[email protected]", "type": "Primary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0.29.0,0.32.7)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "btrbk", "source": "cna", "vendor": "digint"}, "product": "btrbk", "vendor": "digint"}], "created": "2026-09-18T21:30:14.291467+00:00", "updated": "2026-09-19T17:00:12.549359+00:00", "vendors": ["digint", "digint$PRODUCT$btrbk"]}