{"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":"2026-08-21T11:31:27.439Z"},"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"}},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-08-21T11:31:14.259713Z","id":"CVE-2026-67448","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-08-21T11:31:27.439Z"}}]}}