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.
History

Fri, 30 Oct 2026 16:45:00 +0000

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

Thu, 29 Oct 2026 23:15:00 +0000

Type Values Removed Values Added
Title Remote OS Command Injection via proxy.php in Collabora Online Built‑in CODE Server

Mon, 26 Oct 2026 17:00:00 +0000

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'}


Sun, 25 Oct 2026 17:15:00 +0000

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

Sat, 24 Oct 2026 14:45:00 +0000

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

Fri, 23 Oct 2026 22:30:00 +0000

Type Values Removed Values Added
Title OS Command Injection in Collabora Online Built‑in CODE Server

Fri, 23 Oct 2026 20:30:00 +0000

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'}


Fri, 23 Oct 2026 19:45:00 +0000

Type Values Removed Values Added
Metrics kev

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


Fri, 23 Oct 2026 19:30:00 +0000

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'}


Mon, 19 Oct 2026 13:30:00 +0000

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

Fri, 16 Oct 2026 02:15:00 +0000

Type Values Removed Values Added
Title OS Command Injection in Collabora Online Built‑in CODE Server

Thu, 15 Oct 2026 13:30:00 +0000

Type Values Removed Values Added
Title OS Command Injection in Collabora Online Built‑in CODE Server Proxy

Wed, 14 Oct 2026 20:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

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


Wed, 14 Oct 2026 17:15:00 +0000

Type Values Removed Values Added
Title OS Command Injection in Collabora Online Built‑in CODE Server Proxy

Wed, 14 Oct 2026 02:45:00 +0000

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'}


cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published: 2026-10-14T02:27:42.315Z

Updated: 2026-10-24T03:55:50.462Z

Reserved: 2026-10-14T02:27:41.637Z

Link: CVE-2026-110447

cve-icon Vulnrichment

Updated: 2026-10-14T19:04:37.530Z

cve-icon NVD

Status : Analyzed

Published: 2026-10-14T03:17:20.683

Modified: 2026-10-30T16:32:46.647

Link: CVE-2026-110447

cve-icon Redhat

No data.