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CVE-2026-34838

nvd nist
Published: Apr 2, 2026Modified: Jul 24, 2026

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9.9
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Exploitability: 3.1 / Impact: 6.0
Source: security-advisories@github.com (Secondary)

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.

Affected (3)

Intermesh
1 product
Group Office
Configuration A
3 vulnerable
Vulnerable SoftwareAffected Versions
Intermesh
Group Office
Before 6.8.156
Group Office
From 25.0.1 to 25.0.90
Group Office
From 26.0.1 to 26.0.12

Related CWEs

CWE-502
Deserialization of Untrusted Data
The product deserializes untrusted data without sufficiently verifying that the resulting data will be valid.

References (4)

Source: security-advisories@github.com
Release Notes
Source: security-advisories@github.com
Release Notes
Source: security-advisories@github.com
Release Notes
Source: security-advisories@github.com
Vendor Advisory

Timeline

No history available yet.