{"schemaVersion":3,"id":"CVE-2020-3156","aliases":[],"status":"published","duplicateOf":null,"title":null,"description":"A vulnerability in the logging component of Cisco Identity Services Engine could allow an unauthenticated remote attacker to conduct cross-site scripting attacks. The vulnerability is due to the improper validation of endpoint data stored in logs used by the web-based interface. An attacker could exploit this vulnerability by sending malicious endpoint data to the targeted system. An exploit could allow the attacker to execute arbitrary script code in the context of the affected interface or to access sensitive, browser-based information.","dates":{"published":"2020-02-19T19:15:43.531Z","modified":"2024-11-15T17:40:44.386Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":6.1,"severity":"medium","version":"3.1","versionLabel":"v3.1","source":"CVE.org","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","computed":false,"selection":"backend-summary"},"metrics":[{"version":"3.1","versionLabel":"v3.1","source":"CVE.org","score":6.1,"severity":"medium","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","exploitability":null,"impact":null,"computed":false},{"version":"3.1","versionLabel":"v3.1","source":"NVD","score":6.1,"severity":"medium","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","exploitability":null,"impact":null,"computed":false},{"version":"2.0","versionLabel":"v2.0","source":"NVD","score":4.3,"severity":"medium","vector":"AV:N/AC:M/Au:N/C:N/I:P/A:N","exploitability":null,"impact":null,"computed":false}]},"epss":{"probability":0.01056,"percentile":0.63896,"severity":"low","asOf":"2026-10-19T00:00:00.000Z","change":{"pp":0,"baselineDate":"2026-09-19T00:00:00.000Z","baselineScore":0.01056},"history":[{"date":"2026-09-14T00:00:00.000Z","score":0.01056,"percentile":null},{"date":"2026-09-15T00:00:00.000Z","score":0.01056,"percentile":null},{"date":"2026-09-16T00:00:00.000Z","score":0.01056,"percentile":null},{"date":"2026-09-17T00:00:00.000Z","score":0.01056,"percentile":null},{"date":"2026-09-18T00:00:00.000Z","score":0.01056,"percentile":null},{"date":"2026-09-19T00:00:00.000Z","score":0.01056,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.01056,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.01056,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.01056,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.01056,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.01056,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.01056,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.01056,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.01056,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.01056,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.01056,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.01056,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.01056,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.01056,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.01056,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.01056,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.01056,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.01056,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.01056,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.01056,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.01056,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.01056,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.01056,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.01056,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.01056,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.01056,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.01056,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.01056,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.01056,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.01056,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.01056,"percentile":0.63896}],"last30":[{"date":"2026-09-19T00:00:00.000Z","score":0.01056,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.01056,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.01056,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.01056,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.01056,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.01056,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.01056,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.01056,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.01056,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.01056,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.01056,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.01056,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.01056,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.01056,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.01056,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.01056,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.01056,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.01056,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.01056,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.01056,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.01056,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.01056,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.01056,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.01056,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.01056,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.01056,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.01056,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.01056,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.01056,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.01056,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.01056,"percentile":0.63896}]},"kev":{"state":"not-listed","entries":[],"listedCount":0,"totalCatalogs":3,"catalogs":[{"source":"cisa","label":"CISA","listed":false,"entry":null},{"source":"enisa","label":"ENISA","listed":false,"entry":null},{"source":"circl","label":"CIRCL","listed":false,"entry":null}]},"ransomware":{"state":"none-recorded","sources":[]},"exploits":[],"exploitCount":0,"weaknesses":[{"id":"CWE-79","name":"Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')","description":"The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.","type":"weakness","status":"Stable","abstraction":"Base","likelihoodOfExploit":"High","url":"https://cwe.mitre.org/data/definitions/79.html"}],"affected":[{"vendor":"cisco","product":"cisco identity services engine software","name":"Cisco Identity Services Engine Software","label":"cisco identity services engine software","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"≥ unspecified, < n/a","noFixRecorded":false,"fixedIn":null}],"versionsText":"≥ unspecified, < n/a","eol":null,"hubHref":"/vendor/cisco/cisco_identity_services_engine_software"},{"vendor":"cisco","product":"identity_services_engine","name":"identity services engine","label":"identity_services_engine","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"2.6.0:patch1","noFixRecorded":false,"fixedIn":null},{"text":"2.6.0:patch2","noFixRecorded":false,"fixedIn":null},{"text":"2.6.0:patch3","noFixRecorded":false,"fixedIn":null},{"text":"2.7","noFixRecorded":false,"fixedIn":null}],"versionsText":"2.6.0:patch1 | 2.6.0:patch2 | 2.6.0:patch3 | 2.7","eol":null,"hubHref":"/vendor/cisco/identity_services_engine"}],"affectedCount":2,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ise-xss-s3ekcKch","label":"tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ise-xss-s3ekcKch","hostname":"tools.cisco.com","tags":["Vendor Advisory","X Refsource CISCO"]}],"lineage":{"upstream":[],"downstream":[],"duplicates":[],"related":[]},"timeline":[{"kind":"published","date":"2020-02-19T19:15:43.531Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2024-11-15T17:40:44.386Z","label":"Last modified","detail":"Vulnerability information updated.","source":null}],"risk":{"score":25,"level":"medium","profile":"Default","thresholds":{"critical":75,"high":50,"medium":25,"low":10}},"meta":{"dataAsOf":"2026-10-20T04:55:26.784Z","stale":false,"partial":false}}