{"schemaVersion":3,"id":"CVE-2026-110447","aliases":[],"status":"published","duplicateOf":null,"title":null,"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.","dates":{"published":"2026-10-14T02:27:42.315Z","modified":"2026-10-14T19:05:08.552Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":9.2,"severity":"critical","version":"4.0","versionLabel":"v4.0","source":"CVE.org","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","computed":false,"selection":"backend-summary"},"metrics":[{"version":"4.0","versionLabel":"v4.0","source":"CVE.org","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","exploitability":null,"impact":null,"computed":false},{"version":"4.0","versionLabel":"v4.0","source":"NVD","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/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","exploitability":null,"impact":null,"computed":false}]},"epss":{"probability":0.01225,"percentile":0.68559,"severity":"low","asOf":"2026-10-21T00:00:00.000Z","change":{"pp":null,"baselineDate":null,"baselineScore":null},"history":[{"date":"2026-10-14T00:00:00.000Z","score":0.01225,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.01225,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.01225,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.01225,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.01225,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.01225,"percentile":null},{"date":"2026-10-20T00:00:00.000Z","score":0.01225,"percentile":null},{"date":"2026-10-21T00:00:00.000Z","score":0.01225,"percentile":0.68559}],"last30":[{"date":"2026-10-14T00:00:00.000Z","score":0.01225,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.01225,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.01225,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.01225,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.01225,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.01225,"percentile":null},{"date":"2026-10-20T00:00:00.000Z","score":0.01225,"percentile":null},{"date":"2026-10-21T00:00:00.000Z","score":0.01225,"percentile":0.68559}]},"kev":{"state":"not-listed","entries":[],"listedCount":0,"totalCatalogs":3,"catalogs":[{"source":"cisa","label":"CISA","listed":false,"entry":null},{"source":"enisa","label":"ENISA","listed":false,"entry":null},{"source":"circl","label":"CIRCL","listed":false,"entry":null}]},"ransomware":{"state":"none-recorded","sources":[]},"exploits":[],"exploitCount":0,"weaknesses":[{"id":"CWE-78","name":"Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')","description":"The product constructs all or part of an OS command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended OS command when it is sent to a downstream component.","type":"weakness","status":"Stable","abstraction":"Base","likelihoodOfExploit":"High","url":"https://cwe.mitre.org/data/definitions/78.html"}],"affected":[{"vendor":"collabora","product":"collabora online - built-in code server","name":"Collabora Online - Built-in CODE Server","label":"collabora online - built-in code server","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"< 26.4.303","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 26.4.303","eol":null,"hubHref":"/vendor/collabora/collabora_online_-_built-in_code_server"}],"affectedCount":1,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://github.com/CollaboraOnline/richdocumentscode/issues/354","label":"github.com/CollaboraOnline/richdocumentscode/issues/354","hostname":"github.com","tags":["Issue Tracking"]},{"url":"https://help.nextcloud.com/t/to-collabora-built-in-user-update-asap/250516","label":"help.nextcloud.com/t/to-collabora-built-in-user-update-asap/250516","hostname":"help.nextcloud.com","tags":["Vendor Advisory"]}],"lineage":{"upstream":[],"downstream":[],"duplicates":[],"related":[]},"timeline":[{"kind":"published","date":"2026-10-14T02:27:42.315Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2026-10-14T19:05:08.552Z","label":"Last modified","detail":"Vulnerability information updated.","source":null}],"risk":{"score":70,"level":"high","profile":"Default","thresholds":{"critical":75,"high":50,"medium":25,"low":10}},"meta":{"dataAsOf":"2026-10-22T07:53:40.177Z","stale":false,"partial":false}}