{"api_version":"1","generated_at":"2026-07-23T14:30:46+00:00","cve":"CVE-2021-25980","urls":{"html":"https://cve.report/CVE-2021-25980","api":"https://cve.report/api/cve/CVE-2021-25980.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2021-25980","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2021-25980"},"summary":{"title":"CVE-2021-25980","description":"In Talkyard, versions v0.04.01 through v0.6.74-WIP-63220cb, v0.2020.22-WIP-b2e97fe0e through v0.2021.02-WIP-879ef3fe1 and tyse-v0.2021.02-879ef3fe1-regular through tyse-v0.2021.28-af66b6905-regular, are vulnerable to Host Header Injection. 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Disallow access via IP. · debiki/talkyard@4067e19 · GitHub","mime":"text/html","httpstatus":"200","archivestatus":"404"},{"url":"https://www.whitesourcesoftware.com/vulnerability-database/CVE-2021-25980","name":"N/A","refsource":"MISC","tags":[],"title":"CVE-2021-25980 | WhiteSource Vulnerability Database","mime":"text/html","httpstatus":"200","archivestatus":"404"},{"url":"https://www.cve.org/CVERecord?id=CVE-2021-25980","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-25980","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[{"cve_year":"2021","cve_id":"25980","vulnerable":"1","versionEndIncluding":"0.2021.02-wip-879ef3fe1","cpe1":"cpe","cpe2":"2.3","cpe3":"a","cpe4":"talkyard","cpe5":"talkyard","cpe6":"*","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2021","cve_id":"25980","vulnerable":"1","versionEndIncluding":"0.6.74-wip-63220cb","cpe1":"cpe","cpe2":"2.3","cpe3":"a","cpe4":"talkyard","cpe5":"talkyard","cpe6":"*","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2021","cve_id":"25980","vulnerable":"1","versionEndIncluding":"tyse-v0.2021.28-af66b6905-regular","cpe1":"cpe","cpe2":"2.3","cpe3":"a","cpe4":"talkyard","cpe5":"talkyard","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":"vulnerabilitylab@whitesourcesoftware.com","ID":"CVE-2021-25980","STATE":"PUBLIC","TITLE":"Talkyard - Host-Header Injection Leads to Account Takeover"},"affects":{"vendor":{"vendor_data":[{"product":{"product_data":[{"product_name":"talkyard","version":{"version_data":[{"version_affected":">=","version_name":"v0","version_value":"v0.04.01"},{"version_affected":"<=","version_name":"v0","version_value":"v0.6.74-WIP-63220cb"},{"version_affected":">=","version_name":"v0.2020","version_value":"v0.2020.22-WIP-b2e97fe0e"},{"version_affected":"<=","version_name":"v0.2021","version_value":"v0.2021.02-WIP-879ef3fe1"},{"version_affected":">=","version_name":"tyse-v0.2021","version_value":"tyse-v0.2021.02-879ef3fe1-regular"},{"version_affected":"<=","version_name":"tyse-v0.2021","version_value":"tyse-v0.2021.28-af66b6905-regular"}]}}]},"vendor_name":"debiki"}]}},"data_format":"MITRE","data_type":"CVE","data_version":"4.0","description":{"description_data":[{"lang":"eng","value":"In Talkyard, versions v0.04.01 through v0.6.74-WIP-63220cb, v0.2020.22-WIP-b2e97fe0e through v0.2021.02-WIP-879ef3fe1 and tyse-v0.2021.02-879ef3fe1-regular through tyse-v0.2021.28-af66b6905-regular, are vulnerable to Host Header Injection. By luring a victim application-user to click on a link, an unauthenticated attacker can use the “forgot password” functionality to reset the victim’s password and successfully take over their account."}]},"generator":{"engine":"Vulnogram 0.0.9"},"impact":{"cvss":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":8.8,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","version":"3.1"}},"problemtype":{"problemtype_data":[{"description":[{"lang":"eng","value":"CWE-74 Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')"}]}]},"references":{"reference_data":[{"refsource":"MISC","url":"https://github.com/debiki/talkyard/commit/4067e191a909ed06f250d09a40e43aa5edbb0289","name":"https://github.com/debiki/talkyard/commit/4067e191a909ed06f250d09a40e43aa5edbb0289"},{"refsource":"MISC","url":"https://www.whitesourcesoftware.com/vulnerability-database/CVE-2021-25980","name":"https://www.whitesourcesoftware.com/vulnerability-database/CVE-2021-25980"}]},"solution":[{"lang":"eng","value":"Update to tyse-v0.2021.29-8cb7f73fe-regular or later"}],"source":{"advisory":"https://www.whitesourcesoftware.com/vulnerability-database/","discovery":"UNKNOWN"}},"nvd":{"publishedDate":"2021-11-11 07:15:00","lastModifiedDate":"2021-11-16 17:19:00","problem_types":["CWE-74"],"metrics":{"baseMetricV3":{"cvssV3":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"REQUIRED","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH","baseScore":8.8,"baseSeverity":"HIGH"},"exploitabilityScore":2.8,"impactScore":5.9},"baseMetricV2":{"cvssV2":{"version":"2.0","vectorString":"AV:N/AC:M/Au:N/C:P/I:P/A:P","accessVector":"NETWORK","accessComplexity":"MEDIUM","authentication":"NONE","confidentialityImpact":"PARTIAL","integrityImpact":"PARTIAL","availabilityImpact":"PARTIAL","baseScore":6.8},"severity":"MEDIUM","exploitabilityScore":8.6,"impactScore":6.4,"acInsufInfo":false,"obtainAllPrivilege":false,"obtainUserPrivilege":false,"obtainOtherPrivilege":false,"userInteractionRequired":true}},"configurations":{"CVE_data_version":"4.0","nodes":[{"operator":"OR","children":[],"cpe_match":[{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:talkyard:talkyard:*:*:*:*:*:*:*:*","versionStartIncluding":"tyse-v0.2021.02-879ef3fe1-regular","versionEndIncluding":"tyse-v0.2021.28-af66b6905-regular","cpe_name":[]},{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:talkyard:talkyard:*:*:*:*:*:*:*:*","versionStartIncluding":"0.2020.22-wip-b2e97fe0e","versionEndIncluding":"0.2021.02-wip-879ef3fe1","cpe_name":[]},{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:talkyard:talkyard:*:*:*:*:*:*:*:*","versionStartIncluding":"0.04.01","versionEndIncluding":"0.6.74-wip-63220cb","cpe_name":[]}]}]}},"legacy_mitre":{"record":{"CveYear":"2021","CveId":"25980","Ordinal":"200907","Title":"CVE-2021-25980","CVE":"CVE-2021-25980","Year":"2021"},"notes":[{"CveYear":"2021","CveId":"25980","Ordinal":"1","NoteData":"In Talkyard, versions v0.04.01 through v0.6.74-WIP-63220cb, v0.2020.22-WIP-b2e97fe0e through v0.2021.02-WIP-879ef3fe1 and tyse-v0.2021.02-879ef3fe1-regular through tyse-v0.2021.28-af66b6905-regular, are vulnerable to Host Header Injection. 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