CVE-2026-71206

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-71206", "assignerOrgId": "309f9ea4-e3e9-4c6c-b79d-e8eb01244f2c", "state": "PUBLISHED", "assignerShortName": "TuranSec", "dateReserved": "2026-08-05T06:56:15.799Z", "datePublished": "2026-08-05T06:59:06.908Z", "dateUpdated": "2026-08-10T11:45:07.279Z"}, "containers": {"cna": {"title": "shiori - JWT CheckToken Never Re-Validates Account State, Allowing Stale-Privilege Access After Deletion or Demotion", "descriptions": [{"lang": "en", "value": "Shiori's CheckToken function (internal/domains/auth.go) validates only the JWT's HMAC signature and returns the embedded claims.Account object unmodified, never re-fetching the account from the database. No session store or token-revocation mechanism exists in the codebase.", "supportingMedia": [{"type": "text/html", "base64": false, "value": "<p>Shiori's CheckToken function (internal/domains/auth.go) validates only the JWT's HMAC signature and returns the embedded claims.Account object unmodified, never re-fetching the account from the database. No session store or token-revocation mechanism exists in the codebase.</p>"}]}], "problemTypes": [{"descriptions": [{"lang": "en", "description": "CWE-613 Insufficient Session Expiration", "cweId": "CWE-613", "type": "CWE"}]}], "affected": [{"vendor": "go-shiori", "product": "shiori", "programFiles": ["internal/domains/auth.go"], "versions": [{"version": "0", "status": "affected"}], "defaultStatus": "unknown"}], "metrics": [{"other": {"type": "CVSS_3.1_severity", "content": {"value": "HIGH"}}}, {"cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L", "baseScore": 8.2, "baseSeverity": "HIGH", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "LOW"}}], "references": [{"url": "https://github.com/go-shiori/shiori", "tags": ["third-party-advisory"]}], "credits": [{"lang": "en", "value": "Eldor Nabijonov", "type": "finder"}], "providerMetadata": {"orgId": "309f9ea4-e3e9-4c6c-b79d-e8eb01244f2c", "shortName": "TuranSec", "dateUpdated": "2026-08-10T11:45:07.279Z"}, "source": {"discovery": "EXTERNAL"}, "datePublic": "2026-08-05T06:59:06.908Z"}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-08-05T13:18:47.931199Z", "id": "CVE-2026-71206", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "total"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-08-05T13:19:03.494Z"}}]}}

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{"affected": [{"affectedData": [{"defaultStatus": "unknown", "product": "shiori", "programFiles": ["internal/domains/auth.go"], "vendor": "go-shiori", "versions": [{"status": "affected", "version": "0"}]}], "source": "309f9ea4-e3e9-4c6c-b79d-e8eb01244f2c"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Shiori's CheckToken function (internal/domains/auth.go) validates only the JWT's HMAC signature and returns the embedded claims.Account object unmodified, never re-fetching the account from the database. No session store or token-revocation mechanism exists in the codebase."}, {"lang": "es", "value": "La funci\u00f3n CheckToken de Shiori (internal/domains/auth.go) valida \u00fanicamente la firma HMAC del JWT y devuelve el objeto claims.Account incrustado sin modificar, sin volver a obtener la cuenta de la base de datos. No existe un almac\u00e9n de sesiones ni un mecanismo de revocaci\u00f3n de tokens en el c\u00f3digo base. Eliminar una cuenta o degradarla de propietario a un rol regular no tiene efecto en los tokens ya emitidos a esa cuenta - un token de propietario eliminado o degradado contin\u00faa autentic\u00e1ndose con sus privilegios originales de nivel de propietario hasta su caducidad natural, que puede ser de hasta 30 d\u00edas con \u2019recordarme\u2019 habilitado."}], "id": "CVE-2026-71206", "lastModified": "2026-10-24T15:10:00.190", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "LOW", "baseScore": 8.3, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 5.5, "source": "309f9ea4-e3e9-4c6c-b79d-e8eb01244f2c", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-71206", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "total"}], "role": "CISA Coordinator", "timestamp": "2026-08-05T13:18:47.931199Z", "version": "2.0.3"}}]}, "published": "2026-08-05T08:16:42.587", "references": [{"source": "309f9ea4-e3e9-4c6c-b79d-e8eb01244f2c", "url": "https://github.com/go-shiori/shiori"}], "sourceIdentifier": "309f9ea4-e3e9-4c6c-b79d-e8eb01244f2c", "vulnStatus": "Deferred", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-613"}], "source": "309f9ea4-e3e9-4c6c-b79d-e8eb01244f2c", "type": "Secondary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "0"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "shiori", "source": "cna", "vendor": "go-shiori"}, "product": "shiori", "vendor": "go-shiori"}], "created": "2026-08-05T08:45:16.718889+00:00", "updated": "2026-08-10T23:00:07.495588+00:00", "vendors": ["go-shiori", "go-shiori$PRODUCT$shiori"]}