{"api_version":"1","generated_at":"2026-04-22T21:27:18+00:00","cve":"CVE-2022-23632","urls":{"html":"https://cve.report/CVE-2022-23632","api":"https://cve.report/api/cve/CVE-2022-23632.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2022-23632","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2022-23632"},"summary":{"title":"CVE-2022-23632","description":"Traefik is an HTTP reverse proxy and load balancer. Prior to version 2.6.1, Traefik skips the router transport layer security (TLS) configuration when the host header is a fully qualified domain name (FQDN). For a request, the TLS configuration choice can be different than the router choice, which implies the use of a wrong TLS configuration. When sending a request using FQDN handled by a router configured with a dedicated TLS configuration, the TLS configuration falls back to the default configuration that might not correspond to the configured one. If the CNAME flattening is enabled, the selected TLS configuration is the SNI one and the routing uses the CNAME value, so this can skip the expected TLS configuration. Version 2.6.1 contains a patch for this issue. As a workaround, one may add the FDQN to the host rule. However, there is no workaround if the CNAME flattening is enabled.","state":"PUBLIC","assigner":"security-advisories@github.com","published_at":"2022-02-17 15:15:00","updated_at":"2022-11-23 19:22:00"},"problem_types":["CWE-295"],"metrics":[],"references":[{"url":"https://github.com/traefik/traefik/security/advisories/GHSA-hrhx-6h34-j5hc","name":"https://github.com/traefik/traefik/security/advisories/GHSA-hrhx-6h34-j5hc","refsource":"CONFIRM","tags":["Patch","Third Party Advisory"],"title":"Wrong TLS configuration choice · Advisory · traefik/traefik · GitHub","mime":"text/html","httpstatus":"200","archivestatus":"200"},{"url":"https://github.com/traefik/traefik/releases/tag/v2.6.1","name":"https://github.com/traefik/traefik/releases/tag/v2.6.1","refsource":"MISC","tags":["Release Notes","Third Party Advisory"],"title":"Release v2.6.1 · traefik/traefik · GitHub","mime":"text/html","httpstatus":"200","archivestatus":"200"},{"url":"https://github.com/traefik/traefik/pull/8764","name":"https://github.com/traefik/traefik/pull/8764","refsource":"MISC","tags":["Issue Tracking","Patch","Third Party Advisory"],"title":"Apply the same approach as the rules system on the TLS configuration choice by ldez · Pull Request #8764 · traefik/traefik · GitHub","mime":"text/html","httpstatus":"200","archivestatus":"404"},{"url":"https://www.oracle.com/security-alerts/cpujul2022.html","name":"N/A","refsource":"N/A","tags":[],"title":"Oracle Critical Patch Update Advisory - July 2022","mime":"text/html","httpstatus":"200","archivestatus":"200"},{"url":"https://www.cve.org/CVERecord?id=CVE-2022-23632","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2022-23632","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[{"cve_year":"2022","cve_id":"23632","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"a","cpe4":"oracle","cpe5":"communications_unified_inventory_management","cpe6":"7.5.0","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2022","cve_id":"23632","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"a","cpe4":"traefik","cpe5":"traefik","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":"security-advisories@github.com","ID":"CVE-2022-23632","STATE":"PUBLIC","TITLE":"Traefik skips the router TLS configuration when the host header is an FQDN"},"affects":{"vendor":{"vendor_data":[{"product":{"product_data":[{"product_name":"traefik","version":{"version_data":[{"version_value":"< 2.6.1"}]}}]},"vendor_name":"traefik"}]}},"data_format":"MITRE","data_type":"CVE","data_version":"4.0","description":{"description_data":[{"lang":"eng","value":"Traefik is an HTTP reverse proxy and load balancer. Prior to version 2.6.1, Traefik skips the router transport layer security (TLS) configuration when the host header is a fully qualified domain name (FQDN). For a request, the TLS configuration choice can be different than the router choice, which implies the use of a wrong TLS configuration. When sending a request using FQDN handled by a router configured with a dedicated TLS configuration, the TLS configuration falls back to the default configuration that might not correspond to the configured one. If the CNAME flattening is enabled, the selected TLS configuration is the SNI one and the routing uses the CNAME value, so this can skip the expected TLS configuration. Version 2.6.1 contains a patch for this issue. As a workaround, one may add the FDQN to the host rule. However, there is no workaround if the CNAME flattening is enabled."}]},"impact":{"cvss":{"attackComplexity":"HIGH","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":7.4,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N","version":"3.1"}},"problemtype":{"problemtype_data":[{"description":[{"lang":"eng","value":"CWE-295: Improper Certificate Validation"}]}]},"references":{"reference_data":[{"name":"https://github.com/traefik/traefik/security/advisories/GHSA-hrhx-6h34-j5hc","refsource":"CONFIRM","url":"https://github.com/traefik/traefik/security/advisories/GHSA-hrhx-6h34-j5hc"},{"name":"https://github.com/traefik/traefik/pull/8764","refsource":"MISC","url":"https://github.com/traefik/traefik/pull/8764"},{"name":"https://github.com/traefik/traefik/releases/tag/v2.6.1","refsource":"MISC","url":"https://github.com/traefik/traefik/releases/tag/v2.6.1"},{"url":"https://www.oracle.com/security-alerts/cpujul2022.html","refsource":"MISC","name":"https://www.oracle.com/security-alerts/cpujul2022.html"}]},"source":{"advisory":"GHSA-hrhx-6h34-j5hc","discovery":"UNKNOWN"}},"nvd":{"publishedDate":"2022-02-17 15:15:00","lastModifiedDate":"2022-11-23 19:22:00","problem_types":["CWE-295"],"metrics":{"baseMetricV3":{"cvssV3":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"HIGH","availabilityImpact":"NONE","baseScore":7.5,"baseSeverity":"HIGH"},"exploitabilityScore":3.9,"impactScore":3.6},"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":false}},"configurations":{"CVE_data_version":"4.0","nodes":[{"operator":"OR","children":[],"cpe_match":[{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:traefik:traefik:*:*:*:*:*:*:*:*","versionEndExcluding":"2.6.1","cpe_name":[]}]},{"operator":"OR","children":[],"cpe_match":[{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:oracle:communications_unified_inventory_management:7.5.0:*:*:*:*:*:*:*","cpe_name":[]}]}]}},"legacy_mitre":{"record":{"CveYear":"2022","CveId":"23632","Ordinal":"226505","Title":"CVE-2022-23632","CVE":"CVE-2022-23632","Year":"2022"},"notes":[{"CveYear":"2022","CveId":"23632","Ordinal":"1","NoteData":"** RESERVED ** This candidate has been reserved by an organization or individual that will use it when announcing a new security problem. When the candidate has been publicized, the details for this candidate will be provided.","Type":"Description","Title":null}]}}}