cvedb.io
CVE-2026-34838
CRITICAL · CVSS 9.9
EPSS exploitation probability: 0%
Published 2026-04-02T20:16:28.150 · Last modified 2026-06-17T10:39:43.227

Summary

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.

Affected products

intermesh — group-office

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References

This product uses data from the NVD API but is not endorsed or certified by the NVD. Informational only; not professional security advice.