Security Advisory

CVE-2026-34838

CVE vulnerability detail — eXtreme Datacenter Security Operations

Published 2026-04-02 19:15:40

Last updated 2026-04-03 12:55:48

Assigner GitHub_M

State PUBLISHED

Description

Group-Office is an enterprise customer relationship management and groupware tool. Prior to versions 6.8.156, 25.0.90, and 26.0.12, a vulnerability in the AbstractSettingsCollection model leads to insecure deserialization when these settings are loaded. By injecting a serialized FileCookieJar object into a setting string, an authenticated attacker can achieve Arbitrary File Write, leading directly to Remote Code Execution (RCE) on the server. This issue has been patched in versions 6.8.156, 25.0.90, and 26.0.12.

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