{"id":"CVE-2026-93637","title":"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","summary":"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 …","severity":"low","cvss":3.7,"cvssVector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N","cwe":["CWE-307"],"published":"2026-10-14","updated":"2026-10-14","sourceUpdated":"2026-10-14T17:20:21.430","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-93637","references":[{"url":"https://www.rapid7.com/blog/post/ve-breaking-zimbra-identity-boundaries-part-1","label":"cve@rapid7.com"}],"tags":["nvd"],"ingestedAt":"2026-10-14T17:44:53.680Z","slug":"CVE-2026-93637","body":"## Overview\n\nAn 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.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":20,"depthScoreParts":{"impact":20.4,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}