CVE-2026-110447 | defend.network

What is 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 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.

CVSS9.2 NVD 4.0

SeverityCRITICAL

ExploitationNo exploitation reported

Triage statusNo Known Exploit

ActionPatch within 48 hours

CVSS vectorCVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

CWECWE-78

NVD published2026-10-14

NVD last modified2026-10-14

Timeline

2026-10-14Published to the U.S. National Vulnerability Database (NVD)
2026-10-16First covered in a defend.network daily briefing

Affected product

See advisory

References

Referenced in our briefings & reports

PwnEscape kernel RCE, Nextcloud backdoors, ShinyHunters arrests (2026-10-16)

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🤖 This CVE page is generated by defend.network from NVD, CISA KEV, EPSS, and our verified daily briefings. Severity and exploitation data come from official sources; always verify remediation steps against the official vendor advisory before acting in production.

What is CVE-2026-110447?

Timeline

Affected product

References

Referenced in our briefings & reports

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