{"id":"CVE-2026-8201","state":"PUBLISHED","title":"Use-After-Free in MongoDB FLE Query Analysis When Processing Positional Projections on Encrypted Fields","description":"A use-after-free vulnerability exists in MongoDB's Field-Level Encryption (FLE) query analysis component, affecting client-side uses of mongocryptd and crypt_shared. Triggering this vulnerability requires control over the structure of a client's FLE-related query.\n\nThis issue impacts MongoDB Server’s mongocryptd component v7.0 versions prior to 7.0.34, v8.0 versions prior to 8.0.23, v8.2 versions prior to 8.2.9 and v8.3 versions prior to 8.3.2.","publishedAt":"2026-05-13T00:12:35.299Z","updatedAt":"2026-05-13T14:34:27.091Z","severity":{"score":6.1,"label":"Medium","version":"4.0","vector":"CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:L/VI:L/VA:H/SC:L/SI:N/SA:N","source":"mongodb"},"assigner":"mongodb","products":["MongoDB, Inc. 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