CVE-2025-66208

Configuration-Dependent RCE (OS Command Injection) in richdocumentscode proxy

State: Published
Severity: 7.2 High
Published: Dec 3, 2025
Updated: Dec 3, 2025
Reserved: Nov 24, 2025

Description

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.

Scores

CVSS	Score	Vector	Source
4.0	7.2 High	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	GitHub_M

Weaknesses

CWE-78 Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

Affected Products

Product	Versions
onlineCollaboraOnline	< 25.04.702Affected

References

https://github.com/CollaboraOnline/online/security/advisories/GHSA-j3q6-q5pc-v5wf

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