{"schema":"threatline.record/2","record":{"id":"CVE-2026-106433","aliases":[],"summary":"Heap corruption via duplicate masterKey fields in MongoDB libmongocrypt","details":"Improper state management in MongoDB libmongocrypt can cause provider-specific data to be treated as an incompatible type when cleaning up a key document containing duplicate masterKey fields. An authenticated actor who can modify key vault documents, or a server that returns such a key document, can cause invalid memory access and invalid frees in the client process. This can terminate the application or corrupt process memory.","categories":["Databases"],"product":"libmongocrypt","vendor":"MongoDB","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-106433","source_modified_at":"2026-10-08T19:30:26.703Z","fetched_at":"2026-10-23T18:48:36.087640Z","product":"libmongocrypt","vendor":"MongoDB","versions":[{"status":"affected","version":"1.1.0","lessThan":"1.20.5","versionType":"semver"}],"defaultStatus":"unaffected"}],"fixed_versions":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-106433","source_modified_at":"2026-10-08T19:30:26.703Z","fetched_at":"2026-10-23T18:48:36.087640Z","package":{"name":"libmongocrypt","ecosystem":null},"version":"1.20.5","basis":"first unaffected version stated in the CVE record"}],"cvss":8.7,"severity":"High","kev":{"listed":false},"epss":{"probability":0.00266,"percentile":0.1778,"score_date":"2026-10-23"},"published_at":"2026-10-08T18:55:34.174Z","modified_at":"2026-10-08T19:30:26.703Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-106433","fetched_at":"2026-10-23T18:48:36.087640Z","source_modified_at":"2026-10-08T19:30:26.703Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-106433","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23"}],"sources":["CVE List","EPSS"],"references":[{"source":"CVE List","url":"https://jira.mongodb.org/browse/MONGOCRYPT-964"}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","cvss_source":"CVE List","ssvc":{"exploitation":"none","automatable":"no","technical_impact":"total","assessed_at":"2026-10-08T19:30:18.348159Z"},"classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":"vendor and product","confidence":"heuristic","reviewed":false},"change_timestamp":"2026-10-08T19:30:26.703Z","content_hash":"4b84584251503a2bb9707d2c944e510cd938c6eafc17049c4e6a9987473203b2"}}