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CVE-2026-93628 Zimbra Collaboration Suite Calendar Processing Authentication Bypass via Forged iCalendar REPLY Attendee Response

🗓️ 23 Oct 2026 13:18:16Reported by rapid7Type 
cvelist
 cvelist
🔗 www.cve.org👁 6 Views

Unauthenticated authentication bypass in Zimbra Collaboration Suite calendar processing.

Related
Affected
Refs
ReporterTitlePublishedViews
Family
circl
Circl
CVE-2026-93628
23 Oct 202614:59
–circl
cve
CVE
CVE-2026-93628
23 Oct 202613:18
–cve
euvd
EUVD
EUVD-2026-108964
23 Oct 202613:18
–euvd
nvd
NVD
CVE-2026-93628
23 Oct 202614:17
–nvd
ptsecurity
Positive Technologies
PT-2026-122091
23 Oct 202600:00
–ptsecurity
[
  {
    "vendor": "Zimbra",
    "product": "Zimbra Collaboration Suite",
    "versions": [
      {
        "status": "affected",
        "version": "0",
        "lessThanOrEqual": "10.1.21",
        "versionType": "semver"
      }
    ],
    "defaultStatus": "unaffected"
  }
]

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