CVE-2025-66208

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.

CVSS v3 9.8 CRITICAL

9.8^/10

CVSS v3 : CRITICAL

Vector :

Exploitability : 3.9 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/CollaboraOnline/online/security/advisories/GHSA-j3q6-q5pc-v5wf	Patch Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:collabora:collabora_online_-_built-in_code_server:*:*:*:*:*:nextcloud:*:*

History

30 Oct 2026, 16:32

Type	Values Removed	Values Added
CPE	cpe:2.3:a:collabora:online::::::::	cpe:2.3:a:collabora:collabora_online_-_built-in_code_server::::::nextcloud::*
First Time		Collabora collabora Online - Built-in Code Server

18 Oct 2026, 17:10

Type	Values Removed	Values Added
Summary		(es) Collabora Online - Servidor CODE integrado (richdocumentscode) proporciona un servidor integrado con todas las características de edición de documentos de Collabora Online. Versiones anteriores a 25.04.702, Collabora Online tiene una RCE dependiente de la configuración (inyección de comandos del sistema operativo) en el proxy de richdocumentscode. Los usuarios de Nextcloud con la aplicación Collabora Online - Servidor CODE integrado pueden ser vulnerables a ataques a través de proxy.php y un proxy inverso intermedio. Esta vulnerabilidad está corregida en 25.04.702.

Information

Published : 2025-12-03 19:15

Updated : 2026-10-30 16:32

NVD link : CVE-2025-66208

Mitre link : CVE-2025-66208

CVE.ORG link : CVE-2025-66208

JSON object : View

Products Affected

collabora

collabora_online_-_built-in_code_server

CWE

CWE-78

Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

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