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. No user action is required to cause the condition, and any party with ordinary read access to the stored data — without possession of the encryption keys — can observe the unprotected values.
Metrics
Affected Vendors & Products
References
History
Sat, 31 Oct 2026 22:30:00 +0000
| Type | Values Removed | Values Added |
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| Metrics |
ssvc
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Fri, 23 Oct 2026 03:45:00 +0000
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| First Time appeared |
Mongodb
Mongodb c# Driver |
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| Vendors & Products |
Mongodb
Mongodb c# Driver |
Fri, 23 Oct 2026 00:45:00 +0000
| Type | Values Removed | Values Added |
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| 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. No user action is required to cause the condition, and any party with ordinary read access to the stored data — without possession of the encryption keys — can observe the unprotected values. | |
| Title | Silent client-side encryption bypass via unescaped field-name regex in CSFLE schema builder | |
| Weaknesses | CWE-185 | |
| References |
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| Metrics |
cvssV3_1
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Status: PUBLISHED
Assigner: mongodb
Published: 2026-10-22T19:13:58.414Z
Updated: 2026-10-30T19:27:22.054Z
Reserved: 2026-10-21T21:57:54.563Z
Link: CVE-2026-114653
Updated: 2026-10-30T19:27:16.746Z
Status : Awaiting Analysis
Published: 2026-10-22T19:17:39.307
Modified: 2026-10-30T20:17:01.187
Link: CVE-2026-114653
No data.