CVE-2026-114653 Silent client-side encryption bypass via unescaped field-name regex in CSFLE schema builder
- Exploited in the wild
- Not known
- Fix
- None listed
What is CVE-2026-114653?
CVE-2026-114653 is a high-severity vulnerability in MongoDB C# Driver, published on 22 Oct 2026.
Official 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.
Weakness: CWE-185
Which versions are affected by CVE-2026-114653?
How do I fix CVE-2026-114653?
No fix has been published for CVE-2026-114653 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-114653 being exploited?
There is no known exploitation of CVE-2026-114653 in the wild and no public exploit code.
Sources
Also known as GHSA-ggmm-wc43-vphh.