{"api_version":"1","generated_at":"2026-07-23T15:30:37+00:00","cve":"CVE-2020-26172","urls":{"html":"https://cve.report/CVE-2020-26172","api":"https://cve.report/api/cve/CVE-2020-26172.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2020-26172","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2020-26172"},"summary":{"title":"CVE-2020-26172","description":"Every login in tangro Business Workflow before 1.18.1 generates the same JWT token, which allows an attacker to reuse the token when a session is active. The JWT token does not contain an expiration timestamp.","state":"PUBLIC","assigner":"cve@mitre.org","published_at":"2020-12-18 10:15:00","updated_at":"2020-12-21 21:11:00"},"problem_types":["CWE-294"],"metrics":[],"references":[{"url":"https://www.tangro.de/","name":"https://www.tangro.de/","refsource":"MISC","tags":["Product"],"title":"Tangro Software Components GmbH","mime":"text/html","httpstatus":"200","archivestatus":"200"},{"url":"https://blog.to.com/advisory-tangro-bwf-1-17-5-multiple-vulnerabilities/","name":"https://blog.to.com/advisory-tangro-bwf-1-17-5-multiple-vulnerabilities/","refsource":"MISC","tags":["Exploit","Third Party Advisory"],"title":"Advisory: Tangro BWF 1.17.5 Multiple Vulnerabilities - TO Blog","mime":"text/html","httpstatus":"200","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2020-26172","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-26172","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[{"cve_year":"2020","cve_id":"26172","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"a","cpe4":"tangro","cpe5":"business_workflow","cpe6":"*","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2020","cve_id":"26172","vulnerable":"1","versionEndIncluding":"1","cpe1":"cpe","cpe2":"2.3","cpe3":"a","cpe4":"tangro","cpe5":"business_workflow","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":"cve@mitre.org","ID":"CVE-2020-26172","STATE":"PUBLIC"},"affects":{"vendor":{"vendor_data":[{"product":{"product_data":[{"product_name":"n/a","version":{"version_data":[{"version_value":"n/a"}]}}]},"vendor_name":"n/a"}]}},"data_format":"MITRE","data_type":"CVE","data_version":"4.0","description":{"description_data":[{"lang":"eng","value":"Every login in tangro Business Workflow before 1.18.1 generates the same JWT token, which allows an attacker to reuse the token when a session is active. The JWT token does not contain an expiration timestamp."}]},"problemtype":{"problemtype_data":[{"description":[{"lang":"eng","value":"n/a"}]}]},"references":{"reference_data":[{"url":"https://www.tangro.de/","refsource":"MISC","name":"https://www.tangro.de/"},{"url":"https://blog.to.com/advisory-tangro-bwf-1-17-5-multiple-vulnerabilities/","refsource":"MISC","name":"https://blog.to.com/advisory-tangro-bwf-1-17-5-multiple-vulnerabilities/"}]},"impact":{"cvss":{"attackComplexity":"HIGH","attackVector":"NETWORK","availabilityImpact":"NONE","confidentialityImpact":"LOW","integrityImpact":"LOW","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AC:H/AV:N/A:N/C:L/I:L/PR:N/S:U/UI:R","version":"3.1"}}},"nvd":{"publishedDate":"2020-12-18 10:15:00","lastModifiedDate":"2020-12-21 21:11:00","problem_types":["CWE-294"],"metrics":{"baseMetricV3":{"cvssV3":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"LOW","integrityImpact":"LOW","availabilityImpact":"NONE","baseScore":6.5,"baseSeverity":"MEDIUM"},"exploitabilityScore":3.9,"impactScore":2.5},"baseMetricV2":{"cvssV2":{"version":"2.0","vectorString":"AV:N/AC:L/Au:N/C:P/I:P/A:N","accessVector":"NETWORK","accessComplexity":"LOW","authentication":"NONE","confidentialityImpact":"PARTIAL","integrityImpact":"PARTIAL","availabilityImpact":"NONE","baseScore":6.4},"severity":"MEDIUM","exploitabilityScore":10,"impactScore":4.9,"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:tangro:business_workflow:*:*:*:*:*:*:*:*","versionEndExcluding":"1.18.1","cpe_name":[]}]}]}},"legacy_mitre":{"record":{"CveYear":"2020","CveId":"26172","Ordinal":"187594","Title":"CVE-2020-26172","CVE":"CVE-2020-26172","Year":"2020"},"notes":[{"CveYear":"2020","CveId":"26172","Ordinal":"1","NoteData":"Every login in tangro Business Workflow before 1.18.1 generates the same JWT token, which allows an attacker to reuse the token when a session is active. The JWT token does not contain an expiration timestamp.","Type":"Description","Title":null},{"CveYear":"2020","CveId":"26172","Ordinal":"2","NoteData":"2020-12-18","Type":"Other","Title":"Published"},{"CveYear":"2020","CveId":"26172","Ordinal":"3","NoteData":"2020-12-18","Type":"Other","Title":"Modified"}]}}}