{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-84637",
        "assignerOrgId": "f16b083a-5664-49f3-a51e-8d479e5ed7fe",
        "state": "PUBLISHED",
        "assignerShortName": "mozilla",
        "dateReserved": "2026-09-01T21:25:08.170Z",
        "datePublished": "2026-09-01T21:25:08.554Z",
        "dateUpdated": "2026-09-01T21:44:14.831Z"
    },
    "containers": {
        "cna": {
            "affected": [
                {
                    "product": "Thunderbird",
                    "vendor": "Mozilla",
                    "versions": [
                        {
                            "status": "unaffected",
                            "version": "153.2",
                            "lessThanOrEqual": "153.*",
                            "versionType": "rpm"
                        },
                        {
                            "status": "unaffected",
                            "version": "154",
                            "lessThanOrEqual": "*",
                            "versionType": "rpm"
                        }
                    ]
                }
            ],
            "descriptions": [
                {
                    "lang": "en",
                    "value": "Malicious calendar invitations could use file URI attachments to launch local or network-hosted executables on Windows, bypassing Thunderbird's normal executable attachment protections. With the new invitation display enabled, the attachment could also appear under a misleading filename. This vulnerability was fixed in Thunderbird 154 and Thunderbird 153.2.",
                    "supportingMedia": [
                        {
                            "type": "text/html",
                            "base64": false,
                            "value": "Malicious calendar invitations could use file URI attachments to launch local or network-hosted executables on Windows, bypassing Thunderbird's normal executable attachment protections. With the new invitation display enabled, the attachment could also appear under a misleading filename. This vulnerability was fixed in Thunderbird 154 and Thunderbird 153.2."
                        }
                    ]
                }
            ],
            "title": "Calendar invitation attachments could launch local executables",
            "references": [
                {
                    "url": "https://bugzilla.mozilla.org/show_bug.cgi?id=2043878"
                },
                {
                    "url": "https://www.mozilla.org/security/advisories/mfsa2026-78/"
                },
                {
                    "url": "https://www.mozilla.org/security/advisories/mfsa2026-88/"
                }
            ],
            "credits": [
                {
                    "lang": "en",
                    "value": "Trung Nguyen"
                }
            ],
            "providerMetadata": {
                "orgId": "f16b083a-5664-49f3-a51e-8d479e5ed7fe",
                "shortName": "mozilla",
                "dateUpdated": "2026-09-01T21:44:14.831Z"
            }
        }
    }
}