{"api_version":"1","generated_at":"2026-07-23T23:23:09+00:00","cve":"CVE-2019-1866","urls":{"html":"https://cve.report/CVE-2019-1866","api":"https://cve.report/api/cve/CVE-2019-1866.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2019-1866","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2019-1866"},"summary":{"title":"CVE-2019-1866","description":"Cisco Webex Business Suite before 39.1.0 contains a vulnerability that could allow an unauthenticated, remote attacker to affect the integrity of the application. The vulnerability is due to improper validation of host header values. An attacker with a privileged network position, either a man-in-the-middle or by intercepting wireless network traffic, could exploit this vulnerability to manipulate header values sent by a client to the affected application. The attacker could cause the application to use input from the header to redirect a user from the Cisco Webex Meetings Online site to an arbitrary site of the attacker's choosing.","state":"PUBLIC","assigner":"psirt@cisco.com","published_at":"2020-04-13 17:15:00","updated_at":"2020-04-13 18:35:00"},"problem_types":["CWE-345"],"metrics":[],"references":[{"url":"https://quickview.cloudapps.cisco.com/quickview/bug/CSCvm98833","name":"20200413 Cisco Webex Business Suite Host Header Value Integrity Vulnerability","refsource":"CISCO","tags":["Vendor Advisory"],"title":"Cisco Bug: CSCvm98833 - Cisco Webex Business Suite Host Header Injection Vulnerability","mime":"text/html","httpstatus":"200","archivestatus":"200"},{"url":"https://www.cve.org/CVERecord?id=CVE-2019-1866","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2019-1866","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[{"source":"LEGACY","value":"Cisco would like to thank Prasenjit Kanti Paul for reporting this vulnerability.","lang":""}],"nvd_cpes":[{"cve_year":"2019","cve_id":"1866","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"a","cpe4":"cisco","cpe5":"webex_business_suite_39","cpe6":"*","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2019","cve_id":"1866","vulnerable":"1","versionEndIncluding":"1","cpe1":"cpe","cpe2":"2.3","cpe3":"a","cpe4":"cisco","cpe5":"webex_business_suite_39","cpe6":"*","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"}],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[]},"source_records":{"cve_program":{"CVE_data_meta":{"ASSIGNER":"psirt@cisco.com","DATE_PUBLIC":"2020-04-13T16:00:00.000Z","ID":"CVE-2019-1866","STATE":"PUBLIC","TITLE":"Cisco Webex Business Suite Host Header Value Integrity Vulnerability"},"affects":{"vendor":{"vendor_data":[{"product":{"product_data":[{"product_name":"Cisco Webex Business Suite","version":{"version_data":[{"version_affected":"<","version_value":"39.1.0"}]}}]},"vendor_name":"Cisco"}]}},"credit":[{"lang":"eng","value":"Cisco would like to thank Prasenjit Kanti Paul for reporting this vulnerability."}],"data_format":"MITRE","data_type":"CVE","data_version":"4.0","description":{"description_data":[{"lang":"eng","value":"Cisco Webex Business Suite before 39.1.0 contains a vulnerability that could allow an unauthenticated, remote attacker to affect the integrity of the application. The vulnerability is due to improper validation of host header values. An attacker with a privileged network position, either a man-in-the-middle or by intercepting wireless network traffic, could exploit this vulnerability to manipulate header values sent by a client to the affected application. The attacker could cause the application to use input from the header to redirect a user from the Cisco Webex Meetings Online site to an arbitrary site of the attacker's choosing."}]},"exploit":[{"lang":"eng","value":"The Cisco Product Security Incident Response Team (PSIRT) is not aware of any public announcements or malicious use of the vulnerability that is described in this advisory."}],"generator":{"engine":"Vulnogram 0.0.9"},"impact":{"cvss":{"attackComplexity":"HIGH","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":3.1,"baseSeverity":"LOW","confidentialityImpact":"NONE","integrityImpact":"LOW","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:N","version":"3.1"}},"problemtype":{"problemtype_data":[{"description":[{"lang":"eng","value":"CWE-284 Improper Access Control"}]}]},"references":{"reference_data":[{"name":"20200413 Cisco Webex Business Suite Host Header Value Integrity Vulnerability","refsource":"CISCO","url":"https://quickview.cloudapps.cisco.com/quickview/bug/CSCvm98833"}]},"source":{"advisory":"CSCvm98833","defect":["CSCvm98833"],"discovery":"EXTERNAL"}},"nvd":{"publishedDate":"2020-04-13 17:15:00","lastModifiedDate":"2020-04-13 18:35:00","problem_types":["CWE-345"],"metrics":{"baseMetricV3":{"cvssV3":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N","attackVector":"NETWORK","attackComplexity":"HIGH","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"LOW","availabilityImpact":"NONE","baseScore":3.7,"baseSeverity":"LOW"},"exploitabilityScore":2.2,"impactScore":1.4},"baseMetricV2":{"cvssV2":{"version":"2.0","vectorString":"AV:N/AC:M/Au:N/C:N/I:P/A:N","accessVector":"NETWORK","accessComplexity":"MEDIUM","authentication":"NONE","confidentialityImpact":"NONE","integrityImpact":"PARTIAL","availabilityImpact":"NONE","baseScore":4.3},"severity":"MEDIUM","exploitabilityScore":8.6,"impactScore":2.9,"acInsufInfo":false,"obtainAllPrivilege":false,"obtainUserPrivilege":false,"obtainOtherPrivilege":false,"userInteractionRequired":false}},"configurations":{"CVE_data_version":"4.0","nodes":[{"operator":"OR","children":[],"cpe_match":[{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:cisco:webex_business_suite_39:*:*:*:*:*:*:*:*","versionEndExcluding":"39.1.0","cpe_name":[]}]}]}},"legacy_mitre":{"record":{"CveYear":"2019","CveId":"1866","Ordinal":"138649","Title":"CVE-2019-1866","CVE":"CVE-2019-1866","Year":"2019"},"notes":[{"CveYear":"2019","CveId":"1866","Ordinal":"1","NoteData":"Cisco Webex Business Suite before 39.1.0 contains a vulnerability that could allow an unauthenticated, remote attacker to affect the integrity of the application. The vulnerability is due to improper validation of host header values. An attacker with a privileged network position, either a man-in-the-middle or by intercepting wireless network traffic, could exploit this vulnerability to manipulate header values sent by a client to the affected application. The attacker could cause the application to use input from the header to redirect a user from the Cisco Webex Meetings Online site to an arbitrary site of the attacker's choosing.","Type":"Description","Title":null},{"CveYear":"2019","CveId":"1866","Ordinal":"2","NoteData":"2020-04-13","Type":"Other","Title":"Published"},{"CveYear":"2019","CveId":"1866","Ordinal":"3","NoteData":"2020-04-13","Type":"Other","Title":"Modified"}]}}}