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    CVE-2026-33755

    Group-Office is an enterprise customer relationship management and groupware tool. Prior to versions 6.8.158, 25.0.92, and 26.0.17, an authenticated SQL Injection vulnerability in the JMAP `Contact/query` endpoint allows any authenticated user with basic addressbook access to extract arbitrary data from the database — including active session tokens of other users. This enables full account takeover of any user, including the System Administrator, without knowing their password. Versions 6.8.158, 25.0.92, and 26.0.17 fix the issue.

    Published:Mar 27, 2026
    Last Modified:Apr 20, 2026
    EPS:Mar 27, 2026
    EPSS Score:0.00034
    CVSS Score:8.8

    Affected Products

    Vendor
    Intermesh
    Product
    Group-office

    Exploits

    https://github.com/Intermesh/groupoffice/security/advisories/GHSA-3gc4-5993-c2qc

    Related CVEs

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    CVE-2026-30237 (CVSS 2.1) — Group-Office is an enterprise customer relationship management and groupware tool. Prior to versions 6.8.155, …
    CVE-2026-27947 (CVSS 9.4) — Group-Office is an enterprise customer relationship management and groupware tool. Versions prior to 26.0.9, 2…
    CVE-2026-27832 (CVSS 7.1) — Group-Office is an enterprise customer relationship management and groupware tool. Versions prior to 26.0.8, 2…
    CVE-2026-25511 (CVSS 8.2) — Group-Office is an enterprise customer relationship management and groupware tool. Prior to versions 6.8.150, …
    CVE-2026-25512 (CVSS 9.4) — Group-Office is an enterprise customer relationship management and groupware tool. Prior to versions 6.8.150, …
    CVE-2026-25134 (CVSS 9.4) — Group-Office is an enterprise customer relationship management and groupware tool. Prior to 6.8.150, 25.0.82, …
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    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High