CVE-2025-66208
CRITICALCollabora Online <25.04.702 - OS Command Injection
Title source: llmDescription
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.
References (1)
Core 1
Core References
Patch, Vendor Advisory x_refsource_confirm
https://github.com/CollaboraOnline/online/security/advisories/GHSA-j3q6-q5pc-v5wf
Scores
CVSS v3
9.8
EPSS
0.0095
EPSS Percentile
56.5%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
yes
Technical Impact
total
Details
CWE
CWE-78
Status
published
Products (1)
collabora/online
< 25.04.702
Published
Dec 03, 2025
Tracked Since
Feb 18, 2026