CVE-2026-50054 — An authorization flaw in Zimbra Collaboration Suite’s GrantRightsRequest allows an attacker with access to an authenticated account to grant anothe…
Description
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 authority that survives password changes and session expiry.
CVSS v3.1 base metrics
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:NHigh severity
Band computed from the CVSS base score, not the source's own label — so it means the same thing across every feed.
AV
Network
Attack Vector
AC
Low
Attack Complexity
PR
Low
Privileges Required
UI
None
User Interaction
S
Unchanged
Scope
C
High
Confidentiality
I
Low
Integrity
A
None
Availability
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