SB2026111220 - Authorization bypass through user-controlled key in Group Office

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Main Vulnerability Database SB2026111220

SB2026111220 - Authorization bypass through user-controlled key in Group Office

Published: November 12, 2026

Security Bulletin ID SB2026111220
CSH Severity
Low
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Remote access
Highest impact Information disclosure

Breakdown by Severity

Low 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 vulnerability.


1) Authorization bypass through user-controlled key (CVE-ID: N/A)

CWE-ID: CWE-639 - Authorization Bypass Through User-Controlled Key

CVSSv4: 5.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]


The vulnerability allows a remote user to disclose contact names and their containing address books across access-control boundaries.

The vulnerability exists due to authorization bypass through user-controlled keys in Group Office's files/folder/checkModelFolder endpoint when retrieving modern entities and their folder paths without enforcing record or folder permissions. A remote user can enumerate contact identifiers with access to the Files module to harvest names and address-book membership from returned paths.


Remediation

Install update from vendor's website.

References