CVE-2026-110447

Remote OS Command Injection via proxy.php in Collabora Online Built‑in CODE Server

Published Oct 14, 2026 CVSS 4.0 · 9.2 Critical EPSS 73.3% KEV · Listed
Description
Collabora Online Built-in CODE Server before 26.4.303 (richdocumentscode), a Nextcloud app, allows remote code execution, as exploited in the wild in September and October 2026, a different vulnerability than CVE-2025-66208. This is an OS command injection in proxy.php when the CODE server isn't running (e.g., the product was recently restarted). The vulnerability is not present in standalone Collabora Online servers; only this deployment with CODE Server is affected.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
CPEs cpe:2.3:a:collabora:online:*:*:*:*:*:nextcloud:*:* cpe:2.3:a:collabora:collabora_online_-_built-in_code_server:*:*:*:*:*:nextcloud:*:*
Vendors & Products Collabora online
Type Values Removed Values Added
Title Remote OS Command Injection via proxy.php in Collabora Online Built‑in CODE Server
Type Values Removed Values Added
First Time appeared Collabora online
CPEs cpe:2.3:a:collabora:online:*:*:*:*:*:nextcloud:*:*
Vendors & Products Collabora online
Metrics cvssV3_1

{'score': 9.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'}

Type Values Removed Values Added
Title OS Command Injection in Collabora Online Built‑in CODE Server Enabling Remote Code Execution
Type Values Removed Values Added
Title OS Command Injection in Collabora Online Built‑in CODE Server Enabling Remote Code Execution
Type Values Removed Values Added
Title OS Command Injection in Collabora Online Built‑in CODE Server
Type Values Removed Values Added
References
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'active', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
Metrics kev

{'dateAdded': '2026-10-23T00:00:00+00:00', 'dueDate': '2026-10-26T00:00:00+00:00'}

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
First Time appeared Collabora
Collabora collabora Online - Built-in Code Server
Vendors & Products Collabora
Collabora collabora Online - Built-in Code Server
Type Values Removed Values Added
Title OS Command Injection in Collabora Online Built‑in CODE Server
Type Values Removed Values Added
Title OS Command Injection in Collabora Online Built‑in CODE Server Proxy
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
Title OS Command Injection in Collabora Online Built‑in CODE Server Proxy
Type Values Removed Values Added
Description Collabora Online Built-in CODE Server before 26.4.303 (richdocumentscode), a Nextcloud app, allows remote code execution, as exploited in the wild in September and October 2026, a different vulnerability than CVE-2025-66208. This is an OS command injection in proxy.php when the CODE server isn't running (e.g., the product was recently restarted). The vulnerability is not present in standalone Collabora Online servers; only this deployment with CODE Server is affected.
Weaknesses CWE-78
References
Metrics cvssV4_0

{'score': 9.2, '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'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
mitre
Published
Updated
Oct 24, 2026, 3:55 AM
Reserved
Oct 14, 2026, 2:27 AM
Status
Analyzed
Published
Oct 14, 2026, 3:17 AM
Modified
Oct 30, 2026, 4:32 PM