{"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"}}}}

{}

{"affected": [{"affectedData": [{"product": "chartbrew", "vendor": "chartbrew", "versions": [{"status": "affected", "version": "< 5.2.3"}]}], "source": "security-advisories@github.com"}], "cveTags": [], "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."}], "id": "CVE-2026-85295", "lastModified": "2026-11-06T21:17:11.140", "metrics": {"cvssMetricV31": [{"cvssData": {"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"}, "exploitabilityScore": 3.9, "impactScore": 5.9, "source": "security-advisories@github.com", "type": "Secondary"}]}, "published": "2026-11-06T21:17:10.890", "references": [{"source": "security-advisories@github.com", "url": "https://github.com/chartbrew/chartbrew/commit/da8c71f156aaa13fbc7ead15a4726740fef2b3c5"}, {"source": "security-advisories@github.com", "url": "https://github.com/chartbrew/chartbrew/releases/tag/v5.2.3"}, {"source": "security-advisories@github.com", "url": "https://github.com/chartbrew/chartbrew/security/advisories/GHSA-qvv4-r3q6-8797"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Deferred", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-1394"}], "source": "security-advisories@github.com", "type": "Primary"}]}

{}

{}