CVE-2026-93637

CVE Enrichment

CVSS: 3.7 LOW
EPSS: 0.29%
EPSS Percentile: 20.63%
CISA KEV: Not listed

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.

Technical Details

CVSS Version: 3.1
CNA / NVD Source: cve@rapid7.com
Published: 15-Oct-2026 00:20
Last Modified: 17-Oct-2026 02:55
EPSS Date: 2026-10-16
CWE: CWE-307

CVSS Vector


            CVSS:3.1                            AV:N /
                            AC:H /
                            PR:N /
                            UI:N /
                            S:U /
                            C:L /
                            I:N /
                            A:N

References

cve@rapid7.com

Last enrichment sync: 17-Oct-2026 10:52
Sources: NVD · FIRST EPSS · CISA KEV
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Reported Context (1)

GraphQL authentication rate-limit bypass (CVE-2026-93637) Rapid7 details five Zimbra flaws enabling password guessing, email impersonation, mailbox access and mail exfiltration

CVE (4)

People (1)

MITRE ATT&CK (5)

Vendors (1)

Products (2)

Tools (1)

Note: Related entities, including threat actors, malware, CVEs, MITRE ATT&CK techniques, vendors, products, tools, countries, and industries, are shown when they appear in the same reporting. Their presence does not necessarily mean they were targeted, compromised, vulnerable, responsible for the activity, or directly involved in the incident.