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CVE-2026-34838

CRITICAL

9.9

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.

Details CVE

Score CVSS v3.19.9

SeveriteCRITICAL

Vecteur CVSSCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

Vecteur d'attaqueNETWORK

ComplexiteLOW

Privileges requisLOW

Interaction utilisateurNONE

Publie4/2/2026

Derniere modification4/3/2026

Sourcenvd

Observations honeypot0

Faiblesses (CWE)

CWE-502

References

https://github.com/Intermesh/groupoffice/releases/tag/v25.0.90(security-advisories@github.com)

https://github.com/Intermesh/groupoffice/releases/tag/v26.0.12(security-advisories@github.com)

https://github.com/Intermesh/groupoffice/releases/tag/v6.8.156(security-advisories@github.com)

https://github.com/Intermesh/groupoffice/security/advisories/GHSA-h22j-frrf-5vxq(security-advisories@github.com)

Correlations IOC

Aucune correlation enregistree

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