{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-54548",
        "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "state": "PUBLISHED",
        "assignerShortName": "GitHub_M",
        "dateReserved": "2026-06-15T19:04:14.456Z",
        "datePublished": "2026-08-26T14:17:32.620Z",
        "dateUpdated": "2026-08-26T14:17:32.620Z"
    },
    "containers": {
        "cna": {
            "title": "kas: Persistent SSH Host Key Checking Disablement",
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "cweId": "CWE-295",
                            "lang": "en",
                            "description": "CWE-295: Improper Certificate Validation",
                            "type": "CWE"
                        }
                    ]
                }
            ],
            "metrics": [
                {
                    "cvssV3_1": {
                        "attackComplexity": "HIGH",
                        "attackVector": "LOCAL",
                        "availabilityImpact": "NONE",
                        "baseScore": 3.3,
                        "baseSeverity": "LOW",
                        "confidentialityImpact": "LOW",
                        "integrityImpact": "LOW",
                        "privilegesRequired": "LOW",
                        "scope": "UNCHANGED",
                        "userInteraction": "REQUIRED",
                        "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:L/I:L/A:N",
                        "version": "3.1"
                    }
                }
            ],
            "references": [
                {
                    "name": "https://github.com/siemens/kas/security/advisories/GHSA-mv8m-v9v6-5f94",
                    "tags": [
                        "x_refsource_CONFIRM"
                    ],
                    "url": "https://github.com/siemens/kas/security/advisories/GHSA-mv8m-v9v6-5f94"
                },
                {
                    "name": "https://github.com/siemens/kas/commit/1c1e861c9f241ce082b86bef6bedc7da9b676294",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/siemens/kas/commit/1c1e861c9f241ce082b86bef6bedc7da9b676294"
                },
                {
                    "name": "https://github.com/siemens/kas/releases/tag/5.4",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/siemens/kas/releases/tag/5.4"
                }
            ],
            "affected": [
                {
                    "vendor": "siemens",
                    "product": "kas",
                    "versions": [
                        {
                            "version": "< 5.4",
                            "status": "affected"
                        }
                    ]
                }
            ],
            "providerMetadata": {
                "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
                "shortName": "GitHub_M",
                "dateUpdated": "2026-08-26T14:17:32.620Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "kas is a setup tool for bitbake based projects. Prior to 5.4, internal SSH key setup triggered by SSH_PRIVATE_KEY or SSH_PRIVATE_KEY_FILE creates ~/.ssh/config when no user-specific SSH configuration exists and adds a global Host * rule containing StrictHostKeyChecking no. In kas/libcmds.py, ssh_no_host_key_check() runs without checking ctx.managed_env, so the setting persists after kas exits and affects future SSH sessions by the same local user, extending beyond the intended short-lived continuous integration environment. A later SSH connection can therefore accept an attacker-controlled host key without verification, increasing the risk of a man-in-the-middle attack that compromises session confidentiality or integrity. This issue is fixed in version 5.4."
                }
            ],
            "source": {
                "advisory": "GHSA-mv8m-v9v6-5f94",
                "discovery": "UNKNOWN"
            }
        }
    }
}