{"affected":[{"affectedData":[{"product":"Jenkins","vendor":"Jenkins project","versions":[{"lessThanOrEqual":"2.299","status":"affected","version":"unspecified","versionType":"custom"},{"lessThanOrEqual":"LTS 2.289.1","status":"affected","version":"unspecified","versionType":"custom"}]}],"source":"jenkinsci-cert@googlegroups.com"}],"configurations":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:a:jenkins:jenkins:*:*:*:*:lts:*:*:*","matchCriteriaId":"EEBF02F6-06E0-4F7B-8E0E-2E4F2270E297","versionEndExcluding":"2.289.2","vulnerable":true},{"criteria":"cpe:2.3:a:jenkins:jenkins:*:*:*:*:-:*:*:*","matchCriteriaId":"1C5962A8-EF27-47EE-A95B-E1B5C5367E84","versionEndExcluding":"2.300","vulnerable":true}],"negate":false,"operator":"OR"}]}],"cveTags":[],"descriptions":[{"lang":"en","value":"Jenkins 2.299 and earlier, LTS 2.289.1 and earlier allows users to cancel queue items and abort builds of jobs for which they have Item/Cancel permission even when they do not have Item/Read permission."},{"lang":"es","value":"Jenkins versiones 2.299 y anteriores, versiones LTS 2.289.1 y anteriores, permiten a usuarios cancelar elementos de la cola y abortar construcciones de trabajos para los que tienen permiso de Elemento/Cancelación incluso cuando no tienen permiso de Elemento/Lectura"}],"id":"CVE-2021-21670","lastModified":"2026-06-17T03:35:58.163","metrics":{"cvssMetricV2":[{"acInsufInfo":false,"baseSeverity":"MEDIUM","cvssData":{"accessComplexity":"LOW","accessVector":"NETWORK","authentication":"SINGLE","availabilityImpact":"NONE","baseScore":4.0,"confidentialityImpact":"NONE","integrityImpact":"PARTIAL","vectorString":"AV:N/AC:L/Au:S/C:N/I:P/A:N","version":"2.0"},"exploitabilityScore":8.0,"impactScore":2.9,"obtainAllPrivilege":false,"obtainOtherPrivilege":false,"obtainUserPrivilege":false,"source":"nvd@nist.gov","type":"Primary","userInteractionRequired":false}],"cvssMetricV31":[{"cvssData":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":4.3,"baseSeverity":"MEDIUM","confidentialityImpact":"NONE","integrityImpact":"LOW","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N","version":"3.1"},"exploitabilityScore":2.8,"impactScore":1.4,"source":"nvd@nist.gov","type":"Primary"}]},"published":"2021-06-30T17:15:08.900","references":[{"source":"jenkinsci-cert@googlegroups.com","tags":["Mailing List","Third Party Advisory"],"url":"http://www.openwall.com/lists/oss-security/2021/06/30/1"},{"source":"jenkinsci-cert@googlegroups.com","tags":["Vendor Advisory"],"url":"https://www.jenkins.io/security/advisory/2021-06-30/#SECURITY-2278"},{"source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Mailing List","Third Party Advisory"],"url":"http://www.openwall.com/lists/oss-security/2021/06/30/1"},{"source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Vendor Advisory"],"url":"https://www.jenkins.io/security/advisory/2021-06-30/#SECURITY-2278"}],"sourceIdentifier":"jenkinsci-cert@googlegroups.com","vulnStatus":"Modified"}