CVE-2026-93637

EUVD-2026-101460
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.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
rapid7CNA
3.7 LOW
NETWORK
HIGH
NONE
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N
Base Score
CVSS 3.x
EPSS Score
Percentile: Unknown
Early Detection
Affected products identified ahead of NVD analysis through intelligence sources.
VendorProductVersionSource
zimbracollaboration
𝑥
≤ 10.1.21
CNA
Common Weakness Enumeration
References
https://www.rapid7.com/blog/post/ve-breaking-zimbra-identity-boundaries-part-1