{"schema":"threatline.record/2","record":{"id":"CVE-2026-93643","aliases":[],"summary":"Zimbra Collaboration Suite OnlyOffice Integration Path Traversal Leading to Remote Code Execution via Unauthenticated /downloadas Request","details":"When OnlyOffice/Document Editing is available, an unauthenticated remote attacker with access to an existing supported public Briefcase document can abuse unsigned save fields to perform path-traversal writes and execute commands as zimbra.","categories":["Applications & CMS"],"product":"Zimbra Collaboration Suite (ZCS)","vendor":"Zimbra","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-93643","source_modified_at":"2026-09-26T03:55:49.487Z","fetched_at":"2026-10-23T18:52:38.922436Z","product":"Zimbra Collaboration Suite (ZCS)","vendor":"Zimbra","versions":[{"status":"affected","version":"0","lessThan":"10.1.21","versionType":"semver"}],"defaultStatus":"unaffected"}],"fixed_versions":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-93643","source_modified_at":"2026-09-26T03:55:49.487Z","fetched_at":"2026-10-23T18:52:38.922436Z","package":{"name":"Zimbra Collaboration Suite (ZCS)","ecosystem":null},"version":"10.1.21","basis":"first unaffected version stated in the CVE record"}],"cvss":9.8,"severity":"Critical","kev":{"listed":false},"epss":{"probability":0.0096,"percentile":0.61182,"score_date":"2026-10-23"},"published_at":"2026-09-25T13:57:19.199Z","modified_at":"2026-09-26T03:55:49.487Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-93643","fetched_at":"2026-10-23T18:52:38.922436Z","source_modified_at":"2026-09-26T03:55:49.487Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-93643","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23"}],"sources":["CVE List","EPSS"],"references":[{"source":"CVE List","url":"https://wiki.zimbra.com/wiki/Zimbra_Security_Advisories","tags":["vendor-advisory"]}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","cvss_source":"CVE List","ssvc":{"exploitation":"none","automatable":"yes","technical_impact":"total","assessed_at":"2026-09-25T00:00:00+00:00"},"classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":"product","confidence":"heuristic","reviewed":false},"change_timestamp":"2026-09-26T03:55:49.487Z","content_hash":"7a6e1c96240d37f448ee254ac36c033f61a29c0a566b7eebd2dc8c94aa6b2943"}}