{"id":"CVE-2026-110447","aliases":["EUVD-2026-100780","GHSA-f97p-r72q-64h2"],"status":"published","title":"Collabora Online Built-in CODE Server before 26.4.303 (richdocumentscode), a Nextcloud app,...","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.","severity":{"version":"4.0","score":9.2,"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","level":"critical","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.73307,"percentile":0.99465,"model":"v2026.06.15"},"facts":{"in_kev":true,"known_exploited":true,"public_exploit":true,"fix_available":false},"cwes":["CWE-78"],"published":"2026-10-14T02:27:42Z","modified":"2026-11-01T02:46:48Z","kev":{"date_added":"2026-10-23","due_date":"2026-10-26","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.","known_ransomware_use":"Unknown"},"exploitation":[{"source":"euvd","since":"2026-10-23"},{"source":"kev","since":"2026-10-23"}],"exploits":[{"source":"pocgithub","id":"adriyansyah-mf/cve-2026-110447","title":"adriyansyah-mf/cve-2026-110447","date":"2026-10-14","url":"https://github.com/adriyansyah-mf/cve-2026-110447"},{"source":"pocgithub","id":"Iceman2050/cve-2026-110447-checker","title":"Iceman2050/cve-2026-110447-checker","date":"2026-10-15","url":"https://github.com/Iceman2050/cve-2026-110447-checker"},{"source":"pocgithub","id":"CyRouteWolf/cve-2026-110447-poc","title":"CyRouteWolf/cve-2026-110447-poc","date":"2026-10-29","url":"https://github.com/CyRouteWolf/cve-2026-110447-poc"},{"source":"pocgithub","id":"maxprog-svg/CVE-2026-110447","title":"maxprog-svg/CVE-2026-110447","date":"2026-11-02","url":"https://github.com/maxprog-svg/CVE-2026-110447"},{"source":"nuclei","id":"CVE-2026-110447","title":"Collabora Built-in CODE Server \u003c 26.4.303 - OS Command Injection","type":"detection template","url":"https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2026/CVE-2026-110447.yaml"}],"products":[{"vendor":"collabora","product":"collabora online - built-in code server"},{"vendor":"collabora","product":"collabora online – built-in code server"},{"vendor":"collabora","product":"collabora_online_-_built-in_code_server"}],"references":[{"url":"https://github.com/CollaboraOnline/richdocumentscode/issues/354","tags":["issue-tracking","Issue Tracking","report"]},{"url":"https://help.nextcloud.com/t/to-collabora-built-in-user-update-asap/250516","tags":["vendor-advisory","Vendor Advisory","advisory"]},{"url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-110447","tags":["government-resource","US Government Resource","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-110447","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-f97p-r72q-64h2"},{"url":"https://apps.nextcloud.com","tags":["web"]},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/110xxx/CVE-2026-110447.json","tags":["advisory"]},{"url":"https://github.com/CollaboraOnline/richdocumentscode","tags":["package"]}],"sources":{"cve":[{"id":"CVE-2026-110447","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.","status":"published","published":"2026-10-14T02:27:42.315Z","modified":"2026-10-24T03:55:50.462Z","cvss":[{"version":"4.0","score":9.2,"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","level":"critical","assessor":"cna"}],"cwes":["CWE-78"],"updated_at":"2026-11-02T13:34:37.420074Z"}],"euvd":[{"id":"EUVD-2026-100780","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.","status":"published","published":"2026-10-14T02:27:42Z","modified":"2026-10-24T03:55:50Z","cvss":[{"version":"4.0","score":9.2,"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","level":"critical"}],"exploited_since":"2026-10-23","updated_at":"2026-11-02T16:59:31.162656Z"}],"ghsa":[{"id":"GHSA-f97p-r72q-64h2","title":"Collabora Online Built-in CODE Server before 26.4.303 (richdocumentscode), a Nextcloud app,...","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.","status":"published","published":"2026-10-14T03:30:39Z","modified":"2026-10-26T18:32:46Z","cvss":[{"version":"4.0","score":9.2,"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/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"critical"},{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"cwes":["CWE-78"],"updated_at":"2026-11-02T15:14:24.666824Z"}],"kev":[{"id":"CVE-2026-110447","title":"Collabora Online – Built-in CODE Server OS Command Injection Vulnerability","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.","cwes":["CWE-78"],"kev":{"date_added":"2026-10-23","due_date":"2026-10-26","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.","known_ransomware_use":"Unknown"},"updated_at":"2026-11-02T17:00:15.999436Z"}],"nvd":[{"id":"CVE-2026-110447","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.","status":"published","published":"2026-10-14T03:17:20.683Z","modified":"2026-10-30T16:32:46.647Z","cvss":[{"version":"4.0","score":9.2,"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/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"critical","assessor":"secondary"},{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"primary"}],"cwes":["CWE-78"],"updated_at":"2026-11-02T14:12:58.630796Z"}],"osv":[{"id":"CVE-2026-110447","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.","status":"published","published":"2026-10-14T02:27:42.315Z","modified":"2026-11-01T02:46:48.254661754Z","cvss":[{"version":"4.0","score":9.2,"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","level":"critical"}],"cwes":["CWE-78"],"updated_at":"2026-11-02T15:44:55.61515Z"}]}}