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Collabora, Collabora Online – Built-in CODE Server
Description
Collabora Collabora Online – Built-in CODE Server when used within the NextCloud platform contains an OS command injection vulnerability that allows for remote code execution when the CODE server isn't running.
CVSS severity for this advisory hasn't been enriched from NVD yet, check back shortly.
EPSS, exploit probability
Medium1.2%
estimated chance of real-world exploitation in the next 30 days, higher than 68.6% of every CVE FIRST.org scores
Refreshed 10/23/2026, via FIRST.org's EPSS model, not CVSS, this measures likelihood of exploitation, not how severe it would be.
Required action
Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.
CISA-recommended due date: 2026-10-26
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