{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-106499",
        "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "state": "PUBLISHED",
        "assignerShortName": "GitHub_M",
        "dateReserved": "2026-10-06T18:46:47.766Z",
        "datePublished": "2026-10-06T21:25:56.166Z",
        "dateUpdated": "2026-10-07T17:46:09.812Z"
    },
    "containers": {
        "cna": {
            "title": "Backstage: Secret-derived values may be exposed in scaffolder task logs",
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "cweId": "CWE-532",
                            "lang": "en",
                            "description": "CWE-532: Insertion of Sensitive Information into Log File",
                            "type": "CWE"
                        }
                    ]
                }
            ],
            "metrics": [
                {
                    "cvssV3_1": {
                        "attackComplexity": "LOW",
                        "attackVector": "NETWORK",
                        "availabilityImpact": "NONE",
                        "baseScore": 4.9,
                        "baseSeverity": "MEDIUM",
                        "confidentialityImpact": "HIGH",
                        "integrityImpact": "NONE",
                        "privilegesRequired": "HIGH",
                        "scope": "UNCHANGED",
                        "userInteraction": "NONE",
                        "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N",
                        "version": "3.1"
                    }
                }
            ],
            "references": [
                {
                    "name": "https://github.com/backstage/backstage/security/advisories/GHSA-mfvq-x7vr-rgqg",
                    "tags": [
                        "x_refsource_CONFIRM"
                    ],
                    "url": "https://github.com/backstage/backstage/security/advisories/GHSA-mfvq-x7vr-rgqg"
                },
                {
                    "name": "https://github.com/backstage/backstage/commit/dc30fae2d96cb1606d36cc40b242f9b9e539bd70",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/backstage/backstage/commit/dc30fae2d96cb1606d36cc40b242f9b9e539bd70"
                },
                {
                    "name": "https://github.com/backstage/backstage/releases/tag/v1.54.6",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/backstage/backstage/releases/tag/v1.54.6"
                }
            ],
            "affected": [
                {
                    "vendor": "backstage",
                    "product": "backstage",
                    "versions": [
                        {
                            "version": "< 1.54.6",
                            "status": "affected"
                        }
                    ]
                },
                {
                    "vendor": "@backstage",
                    "product": "plugin-scaffolder-backend",
                    "versions": [
                        {
                            "version": "< 4.1.0",
                            "status": "affected"
                        }
                    ]
                }
            ],
            "providerMetadata": {
                "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
                "shortName": "GitHub_M",
                "dateUpdated": "2026-10-06T21:25:56.166Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "Backstage is an open framework for building developer portals. Prior to 4.1.0, the @backstage/plugin-scaffolder-backend package could expose secret-derived values in Scaffolder task logs. Deployments that configure sensitive scaffolder.defaultEnvironment.secrets and allow an attacker to create or modify Scaffolder templates are affected. A template author could cause secret-derived values used during template iteration to be persisted and exposed to users who can access the resulting task logs. This issue is fixed in version 4.1.0."
                }
            ],
            "source": {
                "advisory": "GHSA-mfvq-x7vr-rgqg",
                "discovery": "UNKNOWN"
            }
        },
        "adp": [
            {
                "metrics": [
                    {
                        "other": {
                            "type": "ssvc",
                            "content": {
                                "timestamp": "2026-10-07T17:45:56.549598Z",
                                "id": "CVE-2026-106499",
                                "options": [
                                    {
                                        "Exploitation": "none"
                                    },
                                    {
                                        "Automatable": "no"
                                    },
                                    {
                                        "Technical Impact": "partial"
                                    }
                                ],
                                "role": "CISA Coordinator",
                                "version": "2.0.3"
                            }
                        }
                    }
                ],
                "title": "CISA ADP Vulnrichment",
                "providerMetadata": {
                    "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
                    "shortName": "CISA-ADP",
                    "dateUpdated": "2026-10-07T17:46:09.812Z"
                }
            }
        ]
    }
}