{"id":"CVE-2026-114653","state":"PUBLISHED","title":"Silent client-side encryption bypass via unescaped field-name regex in CSFLE schema builder","description":"A client-side encryption schema construction component in the MongoDB C# Driver places caller-supplied field identifiers into a position that is interpreted as a pattern expression, without normalizing or validating them. As a result, an application that designates certain fields for client-side field-level encryption may have the protection silently fail to apply, so data intended to be encrypted is stored and returned in cleartext; conversely, the rule may apply more broadly than intended. 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