CVE-2026-34838
CRITICAL
9,9
Source: [email protected]
Attack Vector: network
Attack Complexity: low
Privileges Required: low
User Interaction: none
Scope: changed
Confidentiality: high
Integrity: high
Availability: high
Description
AI Translation Available
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.
502
Deserialization of Untrusted Data
DraftCommon Consequences
Security Scopes Affected:
Integrity
Availability
Other
Potential Impacts:
Modify Application Data
Unexpected State
Dos: Resource Consumption (Cpu)
Varies By Context
Applicable Platforms
Languages:
Java, JavaScript, PHP, Python, Ruby
Technologies:
AI/ML, ICS/OT, Not Technology-Specific
https://github.com/Intermesh/groupoffice/releases/tag/v25.0.90
https://github.com/Intermesh/groupoffice/releases/tag/v26.0.12
https://github.com/Intermesh/groupoffice/releases/tag/v6.8.156
https://github.com/Intermesh/groupoffice/security/advisories/GHSA-h22j-frrf-5vxq