CVE-2026-50054 (GCVE-0-2026-50054)

Vulnerability from cvelistv5 – Published: 2026-10-08 16:25 – Updated: 2026-10-08 19:10
VLAI
Title
Zimbra Collaboration Suite GrantRightsRequest SOAP Handler Allows Self-Granting of Undocumented loginAs Mailbox Delegation Right
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 authority that survives password changes and session expiry.
Severity
7.1 (High)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-08 19:10 UTC
CWE
  • CWE-269 - Improper Privilege Management
Assigner
rapid7 CNA under the mitre root
CNA scorecard B 76/100 over 56 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Zimbra Zimbra Collaboration Suite Affected: 0 , < 10.1.20 (semver)
guessed Create a notification for this product.
Credits
Jonah Burgess (CryptoCat), Senior Security Researcher, Rapid7
Show details on NVD website
To clipboard 

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