{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-85295",
        "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "state": "PUBLISHED",
        "assignerShortName": "GitHub_M",
        "dateReserved": "2026-09-03T16:37:49.262Z",
        "datePublished": "2026-11-06T21:05:31.286Z",
        "dateUpdated": "2026-11-06T21:05:31.286Z"
    },
    "containers": {
        "cna": {
            "title": "Chartbrew: Full account takeover via JWTs accepted under default CB_SECRET",
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "cweId": "CWE-1394",
                            "lang": "en",
                            "description": "CWE-1394: Use of Default Cryptographic Key",
                            "type": "CWE"
                        }
                    ]
                }
            ],
            "metrics": [
                {
                    "cvssV3_1": {
                        "attackComplexity": "LOW",
                        "attackVector": "NETWORK",
                        "availabilityImpact": "HIGH",
                        "baseScore": 9.8,
                        "baseSeverity": "CRITICAL",
                        "confidentialityImpact": "HIGH",
                        "integrityImpact": "HIGH",
                        "privilegesRequired": "NONE",
                        "scope": "UNCHANGED",
                        "userInteraction": "NONE",
                        "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
                        "version": "3.1"
                    }
                }
            ],
            "references": [
                {
                    "name": "https://github.com/chartbrew/chartbrew/security/advisories/GHSA-qvv4-r3q6-8797",
                    "tags": [
                        "x_refsource_CONFIRM"
                    ],
                    "url": "https://github.com/chartbrew/chartbrew/security/advisories/GHSA-qvv4-r3q6-8797"
                },
                {
                    "name": "https://github.com/chartbrew/chartbrew/commit/da8c71f156aaa13fbc7ead15a4726740fef2b3c5",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/chartbrew/chartbrew/commit/da8c71f156aaa13fbc7ead15a4726740fef2b3c5"
                },
                {
                    "name": "https://github.com/chartbrew/chartbrew/releases/tag/v5.2.3",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/chartbrew/chartbrew/releases/tag/v5.2.3"
                }
            ],
            "affected": [
                {
                    "vendor": "chartbrew",
                    "product": "chartbrew",
                    "versions": [
                        {
                            "version": "< 5.2.3",
                            "status": "affected"
                        }
                    ]
                }
            ],
            "providerMetadata": {
                "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
                "shortName": "GitHub_M",
                "dateUpdated": "2026-11-06T21:05:31.286Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "Chartbrew is an open-source web application that can connect directly to databases and APIs and use the data to create charts. Prior to 5.2.3, four authentication helpers accepted session tokens signed with CB_SECRET, including known, weak, or shipped-default values. The vulnerable surface is session JWT fallback in server/modules/verifyToken.js, verifyUser.js, getUserFromToken.js, and socketManager.js across the API and socket layer. A stock source or repository Docker Compose deployment retains a known, weak, or default CB_SECRET and an attacker submits a forged HS256 token decoding to a target user id. Knowing the symmetric secret lets the attacker create a token that the legacy verification fallback accepts as the target user without that user's password or two-factor authentication. The condition includes stock source and repository Docker Compose installs and any otherwise known or weak CB_SECRET; a bare container where CB_SECRET is undefined is not affected by this fallback path. A forged session impersonates the chosen user across the entire API and socket layer and exercises that user's Chartbrew privileges. This issue is fixed in version 5.2.3."
                }
            ],
            "source": {
                "advisory": "GHSA-qvv4-r3q6-8797",
                "discovery": "UNKNOWN"
            }
        }
    }
}