CVE Catalog

CVE-2026-110447

CriticalCVSS 9.2
Published: Translated: NVD NIST

Summary

Collabora Online Built-in CODE Server before version 26.4.303 (richdocumentscode), a Nextcloud app, allows remote code execution, exploited in the wild in September and October 2026. This is an OS command injection in proxy.php when the CODE server isn't running. The vulnerability is not present in standalone Collabora Online servers.

Risk Assessment

An attacker can execute arbitrary commands on the server, potentially leading to full system and data compromise.

Recommendation

Update Collabora Online Built-in CODE Server to version 26.4.303 or later. Ensure the CODE server is always running to reduce risk.

Related vulnerabilities

Original NVD description (English source)

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.

Vulnerability data from NVD (NIST) · CISA KEV · EPSS