{"affected":[{"affectedData":[{"product":"WebSphere Application Server","vendor":"IBM","versions":[{"status":"affected","version":"8.0"},{"status":"affected","version":"8.5"},{"status":"affected","version":"9.0"}]}],"source":"psirt@us.ibm.com"}],"configurations":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:a:ibm:websphere_application_server:*:*:*:*:*:*:*:*","matchCriteriaId":"E596AE8A-34AD-43F3-A97E-DC79CE517C8B","versionEndIncluding":"8.0.0.15","versionStartIncluding":"8.0.0.0","vulnerable":true},{"criteria":"cpe:2.3:a:ibm:websphere_application_server:*:*:*:*:*:*:*:*","matchCriteriaId":"F421D853-4015-4375-AD38-E2E95CA51676","versionEndIncluding":"8.5.5.19","versionStartIncluding":"8.5.0.0","vulnerable":true},{"criteria":"cpe:2.3:a:ibm:websphere_application_server:*:*:*:*:*:*:*:*","matchCriteriaId":"F390039E-A164-4AFF-8C63-0ED129F17C04","versionEndIncluding":"9.0.5.6","versionStartIncluding":"9.0.0.0","vulnerable":true}],"negate":false,"operator":"OR"},{"cpeMatch":[{"criteria":"cpe:2.3:o:hp:hp-ux:-:*:*:*:*:*:*:*","matchCriteriaId":"F480AA32-841A-4E68-9343-B2E7548B0A0C","vulnerable":false},{"criteria":"cpe:2.3:o:ibm:aix:-:*:*:*:*:*:*:*","matchCriteriaId":"E492C463-D76E-49B7-A4D4-3B499E422D89","vulnerable":false},{"criteria":"cpe:2.3:o:ibm:i:-:*:*:*:*:*:*:*","matchCriteriaId":"C684FC45-C9BA-4EF0-BD06-BB289450DD21","vulnerable":false},{"criteria":"cpe:2.3:o:ibm:z\\/os:-:*:*:*:*:*:*:*","matchCriteriaId":"0E97A964-6F9E-4C87-9B90-21AE2C1DF52F","vulnerable":false},{"criteria":"cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*","matchCriteriaId":"703AF700-7A70-47E2-BC3A-7FD03B3CA9C1","vulnerable":false},{"criteria":"cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:*","matchCriteriaId":"A2572D17-1DE6-457B-99CC-64AFD54487EA","vulnerable":false},{"criteria":"cpe:2.3:o:oracle:solaris:-:*:*:*:*:*:-:*","matchCriteriaId":"F5027746-8216-452D-83C5-2F8E9546F2A5","vulnerable":false}],"negate":false,"operator":"OR"}],"operator":"AND"}],"cveTags":[],"descriptions":[{"lang":"en","value":"IBM WebSphere Application Server 8.0, 8.5, and 9.0 could allow a remote attacker to traverse directories. An attacker could send a specially-crafted URL request containing \"dot dot\" sequences (/../) to view arbitrary files on the system. IBM X-Force ID: 194883."},{"lang":"es","value":"IBM WebSphere Application Server versiones 8.0, 8.5 y 9.0, podría permitir a un atacante remoto un salto de directorio. Un atacante podría enviar una petición URL especialmente diseñada que contenga secuencias \"dot dot\" (/../) para visualizar archivos arbitrarios en el sistema. IBM X-Force ID: 194883"}],"id":"CVE-2021-20354","lastModified":"2026-06-17T03:33:43.840","metrics":{"cvssMetricV2":[{"acInsufInfo":false,"baseSeverity":"HIGH","cvssData":{"accessComplexity":"LOW","accessVector":"NETWORK","authentication":"NONE","availabilityImpact":"NONE","baseScore":7.8,"confidentialityImpact":"COMPLETE","integrityImpact":"NONE","vectorString":"AV:N/AC:L/Au:N/C:C/I:N/A:N","version":"2.0"},"exploitabilityScore":10.0,"impactScore":6.9,"obtainAllPrivilege":false,"obtainOtherPrivilege":false,"obtainUserPrivilege":false,"source":"nvd@nist.gov","type":"Primary","userInteractionRequired":false}],"cvssMetricV30":[{"cvssData":{"attackComplexity":"HIGH","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":5.9,"baseSeverity":"MEDIUM","confidentialityImpact":"HIGH","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N","version":"3.0"},"exploitabilityScore":2.2,"impactScore":3.6,"source":"psirt@us.ibm.com","type":"Secondary"}],"cvssMetricV31":[{"cvssData":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":7.5,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","version":"3.1"},"exploitabilityScore":3.9,"impactScore":3.6,"source":"nvd@nist.gov","type":"Primary"}]},"published":"2021-02-18T15:15:14.343","references":[{"source":"psirt@us.ibm.com","tags":["VDB Entry","Vendor Advisory"],"url":"https://exchange.xforce.ibmcloud.com/vulnerabilities/194883"},{"source":"psirt@us.ibm.com","tags":["Patch","Vendor Advisory"],"url":"https://www.ibm.com/support/pages/node/6415959"},{"source":"af854a3a-2127-422b-91ae-364da2661108","tags":["VDB Entry","Vendor Advisory"],"url":"https://exchange.xforce.ibmcloud.com/vulnerabilities/194883"},{"source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Patch","Vendor Advisory"],"url":"https://www.ibm.com/support/pages/node/6415959"}],"sourceIdentifier":"psirt@us.ibm.com","vulnStatus":"Modified","weaknesses":[{"description":[{"lang":"en","value":"CWE-22"}],"source":"nvd@nist.gov","type":"Primary"}]}