CVE-2026-114644 Memory-exhaustion denial of service via unbounded symbol interning during BSON/JSON deserialization
- Exploited in the wild
- Not known
- Fix
- None listed
What is CVE-2026-114644?
CVE-2026-114644 is a high-severity vulnerability in MongoDB C# Driver, published on 22 Oct 2026.
Official description
The MongoDB C# Driver's BSON library contains an uncontrolled resource consumption weakness in its deserialization handling of one BSON value type. An application that deserializes untrusted content with the library retains data derived from that content for the lifetime of the process, with no limit on how much accumulates. An unauthenticated remote party who can cause such content to be deserialized can drive unbounded memory growth, exhausting the host application's available memory and denying service. There is no impact to confidentiality or integrity, and no MongoDB server component is affected.
Weakness: CWE-770
Which versions are affected by CVE-2026-114644?
How do I fix CVE-2026-114644?
No fix has been published for CVE-2026-114644 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-114644 being exploited?
There is no known exploitation of CVE-2026-114644 in the wild and no public exploit code.
Sources
Also known as GHSA-x24v-h3xm-qf9x.