{"id":"CVE-2026-110447","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-110447","generatedAt":"2026-10-28T03:58:05.646Z","title":"Collabora Online – Built-in CODE Server OS Command Injection Vulnerability","description":"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.","published":"2026-10-14T03:17:21.000Z","lastModified":"2026-10-26T16:48:12.000Z","status":"Analyzed","sourceIdentifier":"cve@mitre.org","cvss":{"version":"4.0","score":9.2,"severity":"CRITICAL","vector":"CVSS: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/M"},"cwe":["CWE-78"],"affected":["collabora/online"],"epss":{"score":0.11634,"percentile":0.96027,"date":"2026-10-27","history":[{"date":"2026-10-14","score":0.01225,"percentile":0.68235},{"date":"2026-10-24","score":0.02285,"percentile":0.83062},{"date":"2026-10-25","score":0.12328,"percentile":0.96163}]},"kev":{"listed":true,"dateAdded":"2026-10-23","dueDate":"2026-10-26","knownRansomwareCampaignUse":"Unknown","notes":"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.\nhttps://help.nextcloud.com/t/to-collabora-built-in-user-update-asap/250516 ; https://github.com/CollaboraOnline/online/security/advisories/GHSA-g3vx-3m76-fghh ; BOD 26-04: https://www.cisa.gov/news-events/directives/bod-26-04-prioritizing-security-updates-based-risk ; Forensics Triage Requirements: https://www.cisa.gov/news-events/directives/bod-26-04-implementation-guidance-prioritizing-security-updates-based-risk ; https://nvd.nist.gov/vuln/detail/CVE-2026-110447"},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"urgent","text":"Known to be exploited in the wild (CISA KEV, CISA remediation deadline 26 October 2026). Treat as an emergency change: patch or isolate now, then hunt for prior compromise."},"changes":[{"kind":"epss","label":"EPSS jump","at":"2026-10-25T00:00:00.000Z","detail":{"to":0.12328,"from":0.02285,"percentile":0.96163},"summary":"EPSS moved from 2.3% to 12.3% probability of exploitation in the next thirty days."},{"kind":"kev","label":"Added to KEV","at":"2026-10-23T00:00:00.000Z","detail":{"name":"Collabora Online – Built-in CODE Server OS Command Injection Vulnerability","vendor":"Collabora","dueDate":"2026-10-26","product":"Collabora Online – Built-in CODE Server","ransomware":"Unknown"},"summary":"Added to CISA KEV — known to be exploited; federal remediation due 2026-10-26."},{"kind":"new","label":"New CVE","at":"2026-10-14T03:17:21.000Z","detail":{"score":"9.2","severity":"CRITICAL","publishedAt":"2026-10-14T03:17:20.683Z"},"summary":"New CVE, critical severity (CVSS 9.2), EPSS 11.6%."}],"references":[{"url":"https://github.com/CollaboraOnline/richdocumentscode/issues/354","tags":["Issue Tracking"],"source":"cve@mitre.org"},{"url":"https://help.nextcloud.com/t/to-collabora-built-in-user-update-asap/250516","tags":["Vendor Advisory"],"source":"cve@mitre.org"},{"url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-110447","tags":["US Government Resource"],"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-110447","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}