{"id":"CVE-2026-93629","revision":null,"records":[{"revision":"e343c3f2b13a4dc5ad5a96a7d8ab4175","observedAt":"2026-10-23T16:01:20.601+00:00","statement":{"source":"cve-program","id":"CVE-2026-93629","aliases":[],"title":"Zimbra Collaboration Suite Calendar Processing Authentication Bypass via Forged iCalendar REQUEST Organizer Identity","description":"An organizer authentication vulnerability in Zimbra Collaboration Suite (ZCS) allows an unauthenticated email sender to insert calendar invitations attributed to another user. The email delivery path permits external invitations but does not verify that the message sender is authorized to use the iCalendar ORGANIZER identity. When automatic invitation insertion is enabled, a crafted REQUEST component creates an event containing attacker-selected meeting details and reminders under a forged organizer without recipient interaction. No corresponding event is created in the claimed organizer's calendar. ZCS 10.1.16 and 10.1.21 are affected.","state":0,"publishedAt":"2026-10-23T13:19:26.405+00:00","modifiedAt":"2026-10-23T13:19:26.405+00:00","affected":[{"ecosystem":"Vendor product","name":"Zimbra Collaboration Suite","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"Zimbra\",\n                    \"product\": \"Zimbra Collaboration Suite\",\n                    \"versions\": [\n                        {\n                            \"status\": \"affected\",\n                            \"version\": \"0\",\n                            \"lessThanOrEqual\": \"10.1.21\",\n                            \"versionType\": \"semver\"\n                        }\n                    ],\n                    \"defaultStatus\": \"unaffected\"\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","score":5.3,"severity":"MEDIUM"}],"references":["https://wiki.zimbra.com/wiki/Zimbra_Security_Advisories","https://www.rapid7.com/blog/post/ve-breaking-zimbra-identity-boundaries-part-1/"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-93629","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-93629","identifiers":["CVE-2026-93629"]},"retained":false,"historicalAffected":[]}],"coverage":[{"source":"cisa-kev:global","scope":"Complete CISA KEV catalog; all vendors. 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Not a global EUVD catalog. Successful not-found lookups count as checked; they do not imply withdrawal or safety. No reader inventory is sent.","generation":"enrichment-3c3fdf72295742c7a66e189e2b63cb9e","complete":false,"records":5734,"lastAttemptAt":"2026-10-27T20:00:28.3741297+00:00","lastSuccessAt":"2026-10-27T20:00:28.37+00:00","error":null,"lastVerifiedAt":"2026-10-27T20:00:28.37+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":1000,"expectedIdentifiers":13501,"failedIdentifiers":0},{"source":"first-epss:nuget","scope":"FIRST EPSS for explicit CVE aliases in the collected public NuGet archive. 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No reader inventory is sent.","generation":"enrichment-3bd7ce170fa9469593b2b05a4c145743","complete":true,"records":13438,"lastAttemptAt":"2026-10-27T19:48:21.6831828+00:00","lastSuccessAt":"2026-10-27T19:48:21.679+00:00","error":null,"lastVerifiedAt":"2026-10-27T19:48:21.679+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":13501,"expectedIdentifiers":13501,"failedIdentifiers":0},{"source":"osv:Go","scope":"Complete OSV Go ecosystem archive, including withdrawn and malicious-package source records; statement counts are not unique CVE counts","generation":"go-0a9352f15ff9b42ef0668815b17985da54b0862a5d24cb9a13f2a99c14c0f811","complete":true,"records":9785,"lastAttemptAt":"2026-10-27T19:48:20.0598535+00:00","lastSuccessAt":"2026-10-27T19:48:19.7606489+00:00","error":null,"lastVerifiedAt":"2026-10-27T19:48:20.0598535+00:00","snapshotPublishedAt":"2026-10-27T19:18:07+00:00","importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"osv:NuGet","scope":"Complete OSV NuGet ecosystem archive, including GitHub Advisory Database records; NuGet version matching only","generation":"nuget-bad5d31e7f6a5e3d338e11d8789069b63620a403f927730769688b42f768e4f6","complete":true,"records":1965,"lastAttemptAt":"2026-10-27T19:46:06.3074736+00:00","lastSuccessAt":"2026-10-26T16:35:43.1460623+00:00","error":null,"lastVerifiedAt":"2026-10-27T19:46:06.3074736+00:00","snapshotPublishedAt":"2026-10-26T16:18:29+00:00","importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"osv:crates.io","scope":"Complete OSV crates.io ecosystem archive, including withdrawn and malicious-package source records; statement counts are not unique CVE counts","generation":"crates.io-3a5b306d60fc44677a03a8afc99d87e6c5402770ef68d560f94a8c3ad3802b75","complete":true,"records":3001,"lastAttemptAt":"2026-10-27T19:48:20.1662846+00:00","lastSuccessAt":"2026-10-27T16:45:49.0050993+00:00","error":null,"lastVerifiedAt":"2026-10-27T19:48:20.1662846+00:00","snapshotPublishedAt":"2026-10-27T16:33:43+00:00","importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"osv:npm","scope":"Complete OSV npm ecosystem archive, including withdrawn and malicious-package source records; statement counts are not unique CVE counts","generation":"npm-fc1c62e1c2d70dda08a497ed7a59029d5d84def9eb7702ebf314b9dadea06e2f","complete":true,"records":230836,"lastAttemptAt":"2026-10-27T19:48:10.3426958+00:00","lastSuccessAt":"2026-10-27T19:48:08.9643671+00:00","error":null,"lastVerifiedAt":"2026-10-27T19:48:10.3426958+00:00","snapshotPublishedAt":"2026-10-27T19:18:16+00:00","importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null}]}