CVE-2026-67448

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{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2026-67448", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2026-08-21T11:31:14.259713Z"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-08-21T11:31:24.288Z"}}], "cna": {"title": "Mailpit: WebSocket origin check bypass via percent-encoded path (regression of CVE-2026-22689)", "source": {"advisory": "GHSA-8r62-w5wh-fc5m", "discovery": "UNKNOWN"}, "metrics": [{"cvssV3_1": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 6.5, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N", "integrityImpact": "NONE", "userInteraction": "REQUIRED", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}}], "affected": [{"vendor": "axllent", "product": "mailpit", "versions": [{"status": "affected", "version": ">= 1.29.0, < 1.30.6"}]}], "references": [{"url": "https://github.com/axllent/mailpit/security/advisories/GHSA-8r62-w5wh-fc5m", "name": "https://github.com/axllent/mailpit/security/advisories/GHSA-8r62-w5wh-fc5m", "tags": ["x_refsource_CONFIRM"]}, {"url": "https://github.com/axllent/mailpit/commit/fbe5e006c3f1682b819df58b4a932d7a84920be9", "name": "https://github.com/axllent/mailpit/commit/fbe5e006c3f1682b819df58b4a932d7a84920be9", "tags": ["x_refsource_MISC"]}, {"url": "https://github.com/axllent/mailpit/releases/tag/v1.30.6", "name": "https://github.com/axllent/mailpit/releases/tag/v1.30.6", "tags": ["x_refsource_MISC"]}], "descriptions": [{"lang": "en", "value": "Mailpit is an email testing tool and API for developers. From 1.29.0 until 1.30.6, Mailpit's server/server.go origin middleware checks the raw RequestURI for the /api/ prefix while Go's ServeMux routes using the percent-decoded URL path, and server/websockets/client.go configures websocket.Upgrader.CheckOrigin to return true. A malicious website can request /%61pi/events, skip corsOriginAccessControl(), reach the /api/events WebSocket handler, and receive live message IDs, Message-Id values, sender and recipient fields, subjects, tags, and body snippets from an unauthenticated default Mailpit instance after the user visits the site. This is a regression of the earlier WebSocket origin protection and does not affect deployments protected by --ui-auth-file. This issue is fixed in version 1.30.6."}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-177", "description": "CWE-177: Improper Handling of URL Encoding (Hex Encoding)"}]}, {"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-200", "description": "CWE-200: Exposure of Sensitive Information to an Unauthorized Actor"}]}, {"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-346", "description": "CWE-346: Origin Validation Error"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-08-20T21:29:29.682Z"}}}, "cveMetadata": {"cveId": "CVE-2026-67448", "state": "PUBLISHED", "dateUpdated": "2026-08-21T11:31:27.439Z", "dateReserved": "2026-07-29T15:07:24.992Z", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "datePublished": "2026-08-20T21:29:06.185Z", "assignerShortName": "GitHub_M"}, "dataVersion": "5.2"}

{"affected": [{"affectedData": [{"product": "mailpit", "vendor": "axllent", "versions": [{"status": "affected", "version": ">= 1.29.0, < 1.30.6"}]}], "source": "security-advisories@github.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Mailpit is an email testing tool and API for developers. From 1.29.0 until 1.30.6, Mailpit's server/server.go origin middleware checks the raw RequestURI for the /api/ prefix while Go's ServeMux routes using the percent-decoded URL path, and server/websockets/client.go configures websocket.Upgrader.CheckOrigin to return true. A malicious website can request /%61pi/events, skip corsOriginAccessControl(), reach the /api/events WebSocket handler, and receive live message IDs, Message-Id values, sender and recipient fields, subjects, tags, and body snippets from an unauthenticated default Mailpit instance after the user visits the site. This is a regression of the earlier WebSocket origin protection and does not affect deployments protected by --ui-auth-file. This issue is fixed in version 1.30.6."}, {"lang": "es", "value": "Mailpit es una herramienta de prueba de correo electr\u00f3nico y una API para desarrolladores. Desde la versi\u00f3n 1.29.0 hasta la 1.30.6, el middleware de origen server/server.go de Mailpit verifica la RequestURI sin procesar en busca del prefijo /api/ mientras que el ServeMux de Go enruta utilizando la ruta URL decodificada por porcentaje, y server/websockets/client.go configura websocket.Upgrader.CheckOrigin para devolver verdadero. Un sitio web malicioso puede solicitar /%61pi/events, omitir corsOriginAccessControl(), alcanzar el gestor WebSocket /api/events y recibir IDs de mensajes en vivo, valores de Message-Id, campos de remitente y destinatario, asuntos, etiquetas y fragmentos de cuerpo de una instancia predeterminada de Mailpit no autenticada despu\u00e9s de que el usuario visita el sitio. Esto es una regresi\u00f3n de la protecci\u00f3n de origen WebSocket anterior y no afecta a las implementaciones protegidas por --ui-auth-file. Este problema est\u00e1 solucionado en la versi\u00f3n 1.30.6."}], "id": "CVE-2026-67448", "lastModified": "2026-10-18T20:10:00.110", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 6.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 3.6, "source": "security-advisories@github.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-67448", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-08-21T11:31:14.259713Z", "version": "2.0.3"}}]}, "published": "2026-08-20T22:17:56.870", "references": [{"source": "security-advisories@github.com", "url": "https://github.com/axllent/mailpit/commit/fbe5e006c3f1682b819df58b4a932d7a84920be9"}, {"source": "security-advisories@github.com", "url": "https://github.com/axllent/mailpit/releases/tag/v1.30.6"}, {"source": "security-advisories@github.com", "url": "https://github.com/axllent/mailpit/security/advisories/GHSA-8r62-w5wh-fc5m"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Deferred", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-177"}, {"lang": "en", "value": "CWE-200"}, {"lang": "en", "value": "CWE-346"}], "source": "security-advisories@github.com", "type": "Secondary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[1.29.0,1.30.6)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "mailpit", "source": "cna", "vendor": "axllent"}, "product": "mailpit", "vendor": "axllent"}], "created": "2026-08-20T22:45:02.857260+00:00", "updated": "2026-08-21T01:30:05.835426+00:00", "vendors": ["axllent", "axllent$PRODUCT$mailpit"]}