{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-67448", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-07-29T15:07:24.992Z", "datePublished": "2026-08-20T21:29:06.185Z", "dateUpdated": "2026-08-20T21:29:29.682Z"}, "containers": {"cna": {"title": "Mailpit: WebSocket origin check bypass via percent-encoded path (regression of CVE-2026-22689)", "problemTypes": [{"descriptions": [{"cweId": "CWE-177", "lang": "en", "description": "CWE-177: Improper Handling of URL Encoding (Hex Encoding)", "type": "CWE"}]}, {"descriptions": [{"cweId": "CWE-200", "lang": "en", "description": "CWE-200: Exposure of Sensitive Information to an Unauthorized Actor", "type": "CWE"}]}, {"descriptions": [{"cweId": "CWE-346", "lang": "en", "description": "CWE-346: Origin Validation Error", "type": "CWE"}]}], "metrics": [{"cvssV3_1": {"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"}}], "references": [{"name": "https://github.com/axllent/mailpit/security/advisories/GHSA-8r62-w5wh-fc5m", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/axllent/mailpit/security/advisories/GHSA-8r62-w5wh-fc5m"}, {"name": "https://github.com/axllent/mailpit/commit/fbe5e006c3f1682b819df58b4a932d7a84920be9", "tags": ["x_refsource_MISC"], "url": "https://github.com/axllent/mailpit/commit/fbe5e006c3f1682b819df58b4a932d7a84920be9"}, {"name": "https://github.com/axllent/mailpit/releases/tag/v1.30.6", "tags": ["x_refsource_MISC"], "url": "https://github.com/axllent/mailpit/releases/tag/v1.30.6"}], "affected": [{"vendor": "axllent", "product": "mailpit", "versions": [{"version": ">= 1.29.0, < 1.30.6", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-08-20T21:29:29.682Z"}, "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."}], "source": {"advisory": "GHSA-8r62-w5wh-fc5m", "discovery": "UNKNOWN"}}}}

{}

{"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."}], "id": "CVE-2026-67448", "lastModified": "2026-08-20T22:17:56.870", "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"}]}, "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": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-177"}, {"lang": "en", "value": "CWE-200"}, {"lang": "en", "value": "CWE-346"}], "source": "security-advisories@github.com", "type": "Primary"}]}

{}

{}