{"schema":"threatline.record/2","record":{"id":"CVE-2026-73571","aliases":[],"summary":"An authorization bypass vulnerability exists in Zimbra Collaboration (ZCS) before 10.1.17 due to improper authorization validation in delegated email sending functionality. An authenticated attacker c","details":"An authorization bypass vulnerability exists in Zimbra Collaboration (ZCS) before 10.1.17 due to improper authorization validation in delegated email sending functionality. An authenticated attacker can send specially crafted SOAP requests to impersonate another user and send emails without possessing the required delegation or send-as permissions. This occurs in the SaveDraftRequest SOAP handler.","categories":["Applications & CMS"],"product":"Collaboration","vendor":"Zimbra","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-73571","source_modified_at":"2026-08-13T15:57:39.948Z","fetched_at":"2026-10-23T21:10:45.942435Z","product":"Collaboration","vendor":"Zimbra","versions":[{"lessThan":"10.1.17","status":"affected","version":"0","versionType":"custom"}],"defaultStatus":"unaffected"}],"fixed_versions":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-73571","source_modified_at":"2026-08-13T15:57:39.948Z","fetched_at":"2026-10-23T21:10:45.942435Z","package":{"name":"Collaboration","ecosystem":null},"version":"10.1.17","basis":"first unaffected version stated in the CVE record"}],"cvss":3.1,"severity":"Low","kev":{"listed":false},"epss":{"probability":0.00258,"percentile":0.16568,"score_date":"2026-10-23"},"published_at":"2026-08-13T15:20:39.678Z","modified_at":"2026-08-13T15:57:39.948Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-73571","fetched_at":"2026-10-23T21:10:45.942435Z","source_modified_at":"2026-08-13T15:57:39.948Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-73571","fetched_at":"2026-10-23T21:10:45.942435Z","source_modified_at":"2026-10-23"}],"sources":["CVE List","EPSS"],"references":[{"source":"CVE List","url":"https://wiki.zimbra.com/wiki/Zimbra_Security_Advisories"},{"source":"CVE List","url":"https://wiki.zimbra.com/wiki/Security_Center"}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","cvss_source":"CVE List","ssvc":{"exploitation":"none","automatable":"no","technical_impact":"partial","assessed_at":"2026-08-13T15:51:08.536018Z"},"classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":"vendor and product","confidence":"heuristic","reviewed":false},"change_timestamp":"2026-08-13T15:57:39.948Z","content_hash":"930ad59335fbd2dc7530242c267f20c83e616d8c6e87e9849e53eb77ddb140be"}}