Collabora Built-in CODE Server < 26.4.303 - OS Command Injection

Collabora Online Built-in CODE Server before 26.4.303 contains a command injection caused by improper handling in proxy.php when the CODE server is not running, letting remote attackers execute OS commands, exploit requires CODE server to be stopped. id: CVE-2026-110447 info: name: Collabora...

Exploit for OS Command Injection in Collabora Collabora_Online_-_Built-In_Code_Server

CVE-2026-110447 — Collabora Online "Built-in CODE Server" ric...

Exploit for OS Command Injection in Collabora Online

CVE-2026-110447 - Nextcloud richdocumentscode RCE 1-day Una...

Exploit for Improperly Controlled Sequential Memory Allocation in Php

php2shell-tools Read-only triage tools for the October 2026 P...

Nextcloud Collabora Online Built-in CODE Server 26.4.302 Command Injection Exposure Checker

The Collabora Online Built-in CODE Server richdocumentscode app for Nextcloud before version 26.4.303 contains an unauthenticated OS command injection vulnerability in proxy.php. This tool passively checks a supplied Nextcloud instance for public exposure indicators...

Hackers Backdoor Nextcloud Servers Through Critical Flaw in Collabora’s Built-in CODE App

Attackers exploited a flaw in an optional Nextcloud app, Collabora Online - Built-in CODE Server, to plant web shells on Nextcloud servers. Three administrators reported the issue on GitHub, with the first logged attack on September 10. A web shell is a small file that executes any command an...

CVE-2026-110447

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...

CVE-2026-110447

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...

CVE-2026-110447

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...

PT-2026-113607

Name of the Vulnerable Software and Affected Versions Collabora Online Built-in CODE Server richdocumentscode versions prior to 26.4.303 Description An OS command injection flaw exists in the proxy.php file of the Collabora Online Built-in CODE Server for Nextcloud. This issue allows...

CVE-2025-66208 Configuration-Dependent RCE (OS Command Injection) in richdocumentscode proxy

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 Nextclou...

CVE-2025-66208 Configuration-Dependent RCE (OS Command Injection) in richdocumentscode proxy

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 Nextclou...

CVE-2025-66208

CVE-2025-66208 affects Collabora Online – Built-in CODE Server (richdocumentscode proxy). The vulnerability is a configuration-dependent OS command injection (RCE) in the richdocumentscode proxy present in versions prior to 25.04.702, exploitable by attackers via proxy.php and an intermediate rev...

CVE-2025-66208 Configuration-Dependent RCE (OS Command Injection) in richdocumentscode proxy

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 Nextclou...

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 Nextclou...

PT-2025-48979

Name of the Vulnerable Software and Affected Versions Collabora Online - Built-in CODE Server versions prior to 25.04.702 Description A configuration-dependent Remote Code Execution RCE exists in the richdocumentscode proxy. This issue allows OS command injection, where an attacker can execute...

CVE-2025-66208: Improper Neutralization of Special Elements used in an OS Command

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 Nextclou...

CVE-2023-49782 Cross-Site-Scripting vulnerability in error message passing in richdocumentscode

Collabora Online is a collaborative online office suite based on LibreOffice technology. Users of Nextcloud with Collabora Online - Built-in CODE Server app can be vulnerable to attack via proxy.php. The bug was fixed in Collabora Online - Built-in CODE Server richdocumentscode release 23.5.601...

CVE-2023-49788

Collabora Online’s Built-in CODE Server (richdocumentscode) is vulnerable to commands from the client that could overwrite files outside the transient session subdirectory. The issue affects vulnerable richdocumentscode versions and is mitigated by upgrading to release 23.5.602; users are advised...

CVE-2023-49788 Improper handling of browser-side provided input in richdocuments path handling

Collabora Online is a collaborative online office suite based on LibreOffice technology. Unlike a standalone dedicated Collabora Online server, the Built-in CODE Server richdocumentscode is run without chroot sandboxing. Vulnerable versions of the richdocumentscode app can be susceptible to attac...