{"schema":"threatline.record/2","record":{"id":"CVE-2026-50055","aliases":[],"summary":"Zimbra Collaboration Suite Sieve Notify Filter Action Bypasses Mail Forwarding Restriction via Variable Expansion","details":"A policy-enforcement flaw in Zimbra Collaboration Suite allows an authenticated user to bypass disabled mail forwarding by using a Sieve notify action to send copies of email content and headers to an arbitrary address.","categories":["Applications & CMS"],"product":"Zimbra Collaboration Suite","vendor":"Zimbra","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-50055","source_modified_at":"2026-10-08T19:10:22.565Z","fetched_at":"2026-10-23T18:48:36.087640Z","product":"Zimbra Collaboration Suite","vendor":"Zimbra","versions":[{"status":"affected","version":"0","lessThan":"10.1.20","versionType":"semver"}],"defaultStatus":"unaffected"}],"fixed_versions":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-50055","source_modified_at":"2026-10-08T19:10:22.565Z","fetched_at":"2026-10-23T18:48:36.087640Z","package":{"name":"Zimbra Collaboration Suite","ecosystem":null},"version":"10.1.20","basis":"first unaffected version stated in the CVE record"}],"cvss":6.5,"severity":"Medium","kev":{"listed":false},"epss":{"probability":0.00274,"percentile":0.18827,"score_date":"2026-10-23"},"published_at":"2026-10-08T16:25:42.312Z","modified_at":"2026-10-08T19:10:22.565Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-50055","fetched_at":"2026-10-23T18:48:36.087640Z","source_modified_at":"2026-10-08T19:10:22.565Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-50055","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":"no","technical_impact":"partial","assessed_at":"2026-10-08T19:10:12.334184Z"},"classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":"product","confidence":"heuristic","reviewed":false},"change_timestamp":"2026-10-08T19:10:22.565Z","content_hash":"6d684db78a405a2de816e0862dfbcb428d3c40c28343c5882e3c712c1b54a550"}}