CVE-2026-93647
9.3
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N
Summary
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.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Zimbra | Zimbra Collaboration Suite (ZCS) | 0 < 10.1.21 | affected |
Weaknesses
- CWE-79: CWE-79 Improper neutralization of input during web page generation ('cross-site scripting')
References
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