{
    "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"
            }
        }
    }
}