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.
References
| Link | Resource |
|---|---|
| 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 |
Configurations
Configuration 1 (hide)
|
History
15 Apr 2026, 17:29
| Type | Values Removed | Values Added |
|---|---|---|
| References | () https://github.com/Intermesh/groupoffice/releases/tag/v25.0.90 - Release Notes | |
| References | () https://github.com/Intermesh/groupoffice/releases/tag/v26.0.12 - Release Notes | |
| References | () https://github.com/Intermesh/groupoffice/releases/tag/v6.8.156 - Release Notes | |
| References | () https://github.com/Intermesh/groupoffice/security/advisories/GHSA-h22j-frrf-5vxq - Vendor Advisory | |
| CPE | cpe:2.3:a:intermesh:group-office:*:*:*:*:*:*:*:* | |
| First Time |
Intermesh
Intermesh group-office |
02 Apr 2026, 20:16
| Type | Values Removed | Values Added |
|---|---|---|
| New CVE |
Information
Published : 2026-04-02 20:16
Updated : 2026-04-15 17:29
NVD link : CVE-2026-34838
Mitre link : CVE-2026-34838
CVE.ORG link : CVE-2026-34838
JSON object : View
Products Affected
intermesh
- group-office
CWE
CWE-502
Deserialization of Untrusted Data