{"attribution":"This product uses data from the NVD API but is not endorsed or certified by the NVD.","cve":{"id":"CVE-2021-27306","sourceIdentifier":"cve@mitre.org","published":"2021-03-18T15:15:16.230","lastModified":"2026-06-17T03:44:37.693","vulnStatus":"Modified","cveTags":[],"descriptions":[{"lang":"en","value":"An improper access control vulnerability in the JWT plugin in Kong Gateway prior to 2.3.2.0 allows unauthenticated users access to authenticated routes without a valid token JWT."},{"lang":"es","value":"Una vulnerabilidad de control de acceso inapropiado en el plugin JWT en Kong Gateway versiones anteriores a 2.3.0.0, permite a usuarios no autenticados acceder a rutas autenticadas sin un token JWT válido"}],"affected":[{"source":"cve@mitre.org","affectedData":[{"vendor":"n/a","product":"n/a","versions":[{"version":"n/a","status":"affected"}]}]}],"metrics":{"cvssMetricV31":[{"source":"nvd@nist.gov","type":"Primary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","baseScore":7.5,"baseSeverity":"HIGH","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"NONE","availabilityImpact":"NONE"},"exploitabilityScore":3.9,"impactScore":3.6}],"cvssMetricV2":[{"source":"nvd@nist.gov","type":"Primary","cvssData":{"version":"2.0","vectorString":"AV:N/AC:M/Au:N/C:P/I:N/A:N","baseScore":4.3,"accessVector":"NETWORK","accessComplexity":"MEDIUM","authentication":"NONE","confidentialityImpact":"PARTIAL","integrityImpact":"NONE","availabilityImpact":"NONE"},"baseSeverity":"MEDIUM","exploitabilityScore":8.6,"impactScore":2.9,"acInsufInfo":false,"obtainAllPrivilege":false,"obtainUserPrivilege":false,"obtainOtherPrivilege":false,"userInteractionRequired":false}]},"weaknesses":[{"source":"nvd@nist.gov","type":"Primary","description":[{"lang":"en","value":"CWE-706"}]}],"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:konghq:kong_gateway:*:*:*:*:enterprise:*:*:*","versionEndExcluding":"2.3.2.0","matchCriteriaId":"3B56DBB1-EAC4-489A-899D-4196DF58BFCB"}]}]}],"references":[{"url":"https://docs.konghq.com/enterprise/changelog/#core-1","source":"cve@mitre.org","tags":["Vendor Advisory"]},{"url":"https://medium.com/%40sew.campos/cve-2021-27306-access-an-authenticated-route-on-kong-api-gateway-6ae3d81968a3","source":"cve@mitre.org"},{"url":"https://docs.konghq.com/enterprise/changelog/#core-1","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Vendor Advisory"]},{"url":"https://medium.com/%40sew.campos/cve-2021-27306-access-an-authenticated-route-on-kong-api-gateway-6ae3d81968a3","source":"af854a3a-2127-422b-91ae-364da2661108"}]}}