CVE-2026-93637
Low
Description
An authentication rate-limit bypass in Zimbra Collaboration Suite 10.1.0 through 10.1.21 allows unauthenticated attackers to make repeated password guesses through GraphQL without incrementing Zimbra’s source-IP failure counter. GraphQL aliases allow multiple authentication attempts in one HTTP request.
SeverityLow
CVSS3.7
Exploit probability—
Product
Zimbra Collaboration Suite
PublishedOct 14, 2026
First seenOct 14, 2026
Weakness typeCWE-307CWE-307
How to fix
Sources list no fixed version or patch link for this vulnerability.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Zimbra Zimbra Collaboration Suite | v ≤ 10.1.21 | — |
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