{
    "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": "2026-09-21T20:50:09.611Z"
    },
    "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"
            }
        },
        "adp": [
            {
                "metrics": [
                    {
                        "other": {
                            "type": "ssvc",
                            "content": {
                                "timestamp": "2026-09-18T19:24:36.668834Z",
                                "id": "CVE-2026-62943",
                                "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": "2026-09-21T20:50:09.611Z"
                }
            }
        ]
    }
}