CVE-2025-66208 HIGH

CVE-2025-66208: Configuration-Dependent RCE (OS Command Injection) in richdocumentscode proxy

Vendor Collaboraonline
Product online
Weakness CWE-78
Published December 3, 2025
Last update December 3, 2025
View on NVD All CVEs

CVSS base score

7.2/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality —
Integrity —

CVSS vector

CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U

What the vulnerability does

01Description

Collabora Online - Built-in CODE Server (richdocumentscode) provides a built-in server with all of the document editing features of Collabora Online. In versions prior to 25.04.702, Collabora Online has a Configuration-Dependent RCE (OS Command Injection) in richdocumentscode proxy. Users of Nextcloud with Collabora Online - Built-in CODE Server app can be vulnerable to attack via proxy.php and an intermediate reverse proxy. This vulnerability is fixed in 25.04.702.

Key dates

02Disclosure timeline

December 3, 2025 CVE published
December 3, 2025 Record updated