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Description

Group-Office is an enterprise customer relationship management and groupware tool. Prior to 6.8.150, 25.0.82, and 26.0.5, the MaintenanceController exposes an action zipLanguage which takes a lang parameter and passes it directly to a system zip command via exec(). This can be combined with uploading a crafted zip file to achieve remote code execution. This vulnerability is fixed in 6.8.150, 25.0.82, and 26.0.5.

PUBLISHED Reserved 2026-01-29 | Published 2026-02-02 | Updated 2026-02-04 | Assigner GitHub_M




CRITICAL: 9.4CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H

Problem types

CWE-88: Improper Neutralization of Argument Delimiters in a Command ('Argument Injection')

Product status

< 6.8.150
affected

>= 25.0.0, < 25.0.82
affected

>= 26.0.0, < 26.0.5
affected

References

github.com/...office/security/advisories/GHSA-v39j-549w-8849

github.com/...ommit/d28490a6a29936db7888aa841ab8ade88800540b

cve.org (CVE-2026-25134)

nvd.nist.gov (CVE-2026-25134)

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