Collabora
OS Command Injection Vulnerability
Exploited in the wild. CISA added it to its Known Exploited Vulnerabilities list on 23 Oct 2026.
CVE-2026-110447Critical9.2Black Shard advisory published
Chance of exploitation in the next 30 days
73%
EPSS score from FIRST
Black Shard's team can check your exposure to CVE-2026-110447 and take the fix off your plate.
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.
Updated 14 Nov 2026, 12:08 UTC, 32 of 36 sources answering.
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