9.9

CVE-2026-34838

Group-Office: Authenticated Remote Code Execution via PHP Insecure Deserialization in `AbstractSettingsCollection`

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.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Intermesh ≫ Group-office Version < 6.8.156
Intermesh ≫ Group-office Version >= 25.0.1 < 25.0.90
Intermesh ≫ Group-office Version >= 26.0.1 < 26.0.12
VulnDex Vulnerability Enrichment
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 1.03% 0.591
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
security-advisories@github.com 9.9 3.1 6
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
CWE-502 Deserialization of Untrusted Data

The product deserializes untrusted data without sufficiently ensuring that the resulting data will be valid.

https://github.com/Intermesh/groupoffice/releases/tag/v25.0.90
Release Notes
https://github.com/Intermesh/groupoffice/releases/tag/v26.0.12
Release Notes
https://github.com/Intermesh/groupoffice/releases/tag/v6.8.156
Release Notes
https://github.com/Intermesh/groupoffice/security/advisories/GHSA-h22j-frrf-5vxq
Vendor Advisory