{"api_version":"1","generated_at":"2026-09-29T04:32:17+00:00","cve":"CVE-2026-93643","urls":{"html":"https://cve.report/CVE-2026-93643","api":"https://cve.report/api/cve/CVE-2026-93643.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-93643","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-93643"},"summary":{"title":"Zimbra Collaboration Suite OnlyOffice Integration Path Traversal Leading to Remote Code Execution via Unauthenticated /downloadas Request","description":"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.","state":"PUBLISHED","assigner":"rapid7","published_at":"2026-09-25 14:17:23","updated_at":"2026-09-26 04:17:51"},"problem_types":["CWE-22","CWE-863","CWE-22 CWE-22 Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')","CWE-863 CWE-863 Incorrect Authorization"],"metrics":[{"version":"3.1","source":"cve@rapid7.com","type":"Secondary","score":"9.8","severity":"CRITICAL","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","data":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","baseScore":9.8,"baseSeverity":"CRITICAL","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH"}},{"version":"3.1","source":"CNA","type":"CVSS","score":"9.8","severity":"CRITICAL","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","data":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":9.8,"baseSeverity":"CRITICAL","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","version":"3.1"}}],"references":[{"url":"https://wiki.zimbra.com/wiki/Zimbra_Security_Advisories","name":"https://wiki.zimbra.com/wiki/Zimbra_Security_Advisories","refsource":"cve@rapid7.com","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-93643","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-93643","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Zimbra","product":"Zimbra Collaboration Suite (ZCS)","version":"affected 10.1.21 semver","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[{"source":"CNA","value":"Jonah Burgess (CryptoCat), Senior Security Researcher, Rapid7","lang":"en"}],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":{"cve_year":"2026","cve_id":"93643","cve":"CVE-2026-93643","epss":"0.009600000","percentile":"0.599940000","score_date":"2026-09-27","updated_at":"2026-09-28 00:02:19"},"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"adp":[{"metrics":[{"other":{"content":{"id":"CVE-2026-93643","options":[{"Exploitation":"none"},{"Automatable":"yes"},{"Technical Impact":"total"}],"role":"CISA Coordinator","timestamp":"2026-09-25T00:00:00+00:00","version":"2.0.3"},"type":"ssvc"}}],"providerMetadata":{"dateUpdated":"2026-09-26T03:55:49.487Z","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP"},"title":"CISA ADP Vulnrichment"}],"cna":{"affected":[{"defaultStatus":"unaffected","product":"Zimbra Collaboration Suite (ZCS)","vendor":"Zimbra","versions":[{"lessThan":"10.1.21","status":"affected","version":"0","versionType":"semver"}]}],"credits":[{"lang":"en","type":"finder","value":"Jonah Burgess (CryptoCat), Senior Security Researcher, Rapid7"}],"datePublic":"2026-09-25T13:53:00.000Z","descriptions":[{"lang":"en","supportingMedia":[{"base64":false,"type":"text/html","value":"When OnlyOffice/Document Editing is available, an unauthenticated remote attacker with access to an existing supported public Briefcase document can abuse unsigned&nbsp;<code>save</code>&nbsp;fields to perform path-traversal writes and execute commands as&nbsp;<code>zimbra</code>."}],"value":"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."}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":9.8,"baseSeverity":"CRITICAL","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}]}],"problemTypes":[{"descriptions":[{"cweId":"CWE-22","description":"CWE-22 Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')","lang":"en","type":"CWE"}]},{"descriptions":[{"cweId":"CWE-863","description":"CWE-863 Incorrect Authorization","lang":"en","type":"CWE"}]}],"providerMetadata":{"dateUpdated":"2026-09-25T13:57:19.199Z","orgId":"9974b330-7714-4307-a722-5648477acda7","shortName":"rapid7"},"references":[{"tags":["vendor-advisory"],"url":"https://wiki.zimbra.com/wiki/Zimbra_Security_Advisories"}],"source":{"discovery":"UNKNOWN"},"title":"Zimbra Collaboration Suite OnlyOffice Integration Path Traversal Leading to Remote Code Execution via Unauthenticated /downloadas Request","x_generator":{"engine":"Vulnogram 1.0.5"}}},"cveMetadata":{"assignerOrgId":"9974b330-7714-4307-a722-5648477acda7","assignerShortName":"rapid7","cveId":"CVE-2026-93643","datePublished":"2026-09-25T13:57:19.199Z","dateReserved":"2026-09-18T12:22:38.559Z","dateUpdated":"2026-09-26T03:55:49.487Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-09-25 14:17:23","lastModifiedDate":"2026-09-26 04:17:51","problem_types":["CWE-22","CWE-863","CWE-22 CWE-22 Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')","CWE-863 CWE-863 Incorrect Authorization"],"metrics":{"cvssMetricV31":[{"source":"cve@rapid7.com","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","baseScore":9.8,"baseSeverity":"CRITICAL","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH"},"exploitabilityScore":3.9,"impactScore":5.9}],"ssvcV203":[{"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","ssvcData":{"timestamp":"2026-09-25T00:00:00+00:00","id":"CVE-2026-93643","options":[{"exploitation":"none"},{"automatable":"yes"},{"technicalImpact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}]},"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"93643","Ordinal":"1","Title":"Zimbra Collaboration Suite OnlyOffice Integration Path Traversal","CVE":"CVE-2026-93643","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"93643","Ordinal":"1","NoteData":"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.","Type":"Description","Title":"Zimbra Collaboration Suite OnlyOffice Integration Path Traversal"}]}}}