CVE-2026-93647 in Collaboration Suite

Riassunto

di MITRE • 25/09/2026

An unauthenticated calendar sender can place active markup in a COUNTER message's RFC From address. Selecting the message in Zimbra Classic triggers stored XSS, allowing the attacker to access mailbox data and act as the victim.

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• Responsabile: Rapid7
• Prenotare: 18/09/2026
• Divulgazione: 25/09/2026
• Moderazione: accettato
• Voce: VDB-410271
• CPE: pronto
• CWE: CWE-79 (confermato)
• CVSS: 9.3 (CNA)
• EPSS: 0.00000
• KEV: no
• Attività: molto basso
• Settore: Finance, Energy, ...

Fonti

• MITRE: https://www.cve.org/CVERecord?id=CVE-2026-93647
• NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-93647
• CVE Details: https://www.cvedetails.com/cve/CVE-2026-93647/