{"id":"CVE-2026-50054","title":"An authorization flaw in Zimbra Collaboration Suite’s GrantRightsRequest allows an attacker with access to an authenticated account to grant another local account the loginAs right, creating persistent mailbox access and mail-sending aut…","summary":"An authorization flaw in Zimbra Collaboration Suite’s GrantRightsRequest allows an attacker with access to an authenticated account to grant another local account the loginAs right, creating persistent mailbox access and mail-sending aut…","severity":"high","cvss":7.1,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N","cwe":["CWE-269"],"vendor":"Zimbra","product":"Zimbra Collaboration Suite","affected":["collaboration_suite < 10.1.20"],"published":"2026-10-08","updated":"2026-10-08","sourceUpdated":"2026-10-08T20:49:23.240","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-50054","references":[{"url":"https://wiki.zimbra.com/wiki/Zimbra_Security_Advisories","label":"cve@rapid7.com"}],"tags":["nvd","cve.org"],"ingestedAt":"2026-10-08T16:52:14.786Z","slug":"CVE-2026-50054","body":"## Overview\n\nAn authorization flaw in Zimbra Collaboration Suite’s GrantRightsRequest allows an attacker with access to an authenticated account to grant another local account the loginAs right, creating persistent mailbox access and mail-sending authority that survives password changes and session expiry.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":39,"depthScoreParts":{"impact":39.1,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}