{"cve_id":"CVE-2026-110447","published":"2026-10-14T03:17:20.683000+00:00","last_modified":"2026-10-30T16:32:46.647000+00:00","vuln_status":"Analyzed","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.","cvss_version":"3.1","cvss_vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","base_score":9.8,"base_severity":"CRITICAL","attack_vector":"NETWORK","privileges_req":"NONE","user_interaction":"NONE","scope":"UNCHANGED","impact_c":"HIGH","impact_i":"HIGH","impact_a":"HIGH","cwe_ids":["CWE-78"],"in_kev":true,"kev_date_added":"2026-10-23","kev_ransomware":false,"epss_score":0.73307,"epss_percentile":0.99461,"cap_rule_version":"0.1.1","stage":"INITIAL_ACCESS","req_access":"NONE","req_vector":"NETWORK","req_user_interaction":false,"grant_access":"USER","caps":["CODE_EXEC"],"terminal":false,"cap_confidence":"high","ingested_at":"2026-10-31T03:17:14.446276+00:00","first_seen":"2026-10-28T03:53:25.601098+00:00","kev_first_seen":"2026-10-28T03:57:14.037332+00:00","novelty_score":83.77,"novelty_reasons":["NEW","KEV_ADDED","EPSS_SPIKE","HIGH_LEVERAGE_STEPPING_STONE"],"novelty_at":"2026-11-02T03:21:44.260683+00:00","vendors":["collabora"],"products":["collabora_online_-_built-in_code_server"],"affected":[{"vendor":"collabora","product":"collabora_online_-_built-in_code_server","ranges":["< 26.4.303"]}]}