{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2026-125370", "assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10", "state": "PUBLISHED", "assignerShortName": "VulnCheck", "dateReserved": "2026-11-09T22:03:03.950Z", "datePublished": "2026-11-09T23:27:41.949Z", "dateUpdated": "2026-11-09T23:27:41.949Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10", "shortName": "VulnCheck", "dateUpdated": "2026-11-09T23:27:41.949Z" }, "datePublic": "2026-08-26T00:00:00.000Z", "title": "Kubero 3.0.0 through 3.1.1 Authentication Bypass via Hardcoded JWT Secret", "descriptions": [ { "lang": "en", "value": "Kubero 3.0.0 through 3.1.1 contains an authentication bypass vulnerability that allows unauthenticated remote attackers to forge administrative JWTs by using a hardcoded fallback signing secret when JWT_SECRET is unset. Attackers can sign tokens with arbitrary role, userGroups and permissions claims, which JwtStrategy.validate() trusts without a database lookup, to take control of pipelines, applications, users and API tokens." } ], "problemTypes": [ { "descriptions": [ { "lang": "en", "description": "Use of Hard-coded Cryptographic Key", "cweId": "CWE-321", "type": "CWE" } ] } ], "affected": [ { "vendor": "kubero-dev", "product": "kubero", "defaultStatus": "unaffected", "versions": [ { "version": "3.0.0", "lessThanOrEqual": "3.1.1", "status": "affected", "versionType": "semver" } ] } ], "metrics": [ { "format": "CVSS", "cvssV4_0": { "version": "4.0", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N", "attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "NONE", "userInteraction": "NONE", "vulnConfidentialityImpact": "HIGH", "vulnIntegrityImpact": "HIGH", "vulnAvailabilityImpact": "HIGH", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "subAvailabilityImpact": "NONE", "baseScore": 9.3, "baseSeverity": "CRITICAL" } }, { "format": "CVSS", "cvssV3_1": { "version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH", "baseScore": 9.8, "baseSeverity": "CRITICAL" } } ], "references": [ { "url": "https://github.com/kubero-dev/kubero/issues/786", "tags": [ "issue-tracking" ], "name": "GitHub Issue #786" }, { "url": "https://github.com/kubero-dev/kubero", "tags": [ "product" ] }, { "url": "https://github.com/kubero-dev/kubero/blob/bcb52376b19347b8c36bc445ddf3e4bff4a5c168/server/src/auth/strategies/jwt.strategy.ts#L13-L32", "tags": [ "technical-description" ] }, { "name": "VulnCheck Advisory: Kubero 3.0.0 through 3.1.1 Authentication Bypass via Hardcoded JWT Secret", "tags": [ "third-party-advisory" ], "url": "https://www.vulncheck.com/advisories/kubero-3.0.0-through-3.1.1-authentication-bypass-via-hardcoded-jwt-secret" } ], "credits": [ { "lang": "en", "value": "28Hus", "type": "finder" } ], "x_generator": { "engine": "vulncheck-endgame" } } } }