# CVE-2026-114644: Memory-exhaustion denial of service via unbounded symbol interning during BSON/JSON deserialization

> CVE-2026-114644: Memory-exhaustion denial of service via unbounded symbol interning during BSON/JSON deserialization. CVSS 5.9 (CVSS 3.1).

Canonical: https://rewindex.com/cve/CVE-2026-114644
Last updated: 2026-10-23T19:45:03Z

- Published: 2026-10-22 19:13 UTC · Updated: 2026-10-23 19:45 UTC · Assigner: mongodb
- CVSS: 5.9 (CVSS 3.1) · Severity: Medium · Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
- EPSS: 0.48%, 41th percentile (scored 2026-10-25)
- CISA KEV: no
- CWE: CWE-770

## 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.

## Affected vendors and products

- MongoDB: C\# Driver

## Tracked companies

- [MongoDB Atlas](https://rewindex.com/company/mongodb-atlas.md)

## References

- [CVE record on cve.org](https://www.cve.org/CVERecord?id=CVE-2026-114644)
- [NVD entry](https://nvd.nist.gov/vuln/detail/CVE-2026-114644)
- [https://github.com/mongodb/mongo-csharp-driver/releases/tag/v3.13.0](https://github.com/mongodb/mongo-csharp-driver/releases/tag/v3.13.0)
- [https://github.com/mongodb/mongo-csharp-driver/security/advisories/GHSA-x24v-h3xm-qf9x](https://github.com/mongodb/mongo-csharp-driver/security/advisories/GHSA-x24v-h3xm-qf9x)
- [https://jira.mongodb.org/browse/CSHARP-6162](https://jira.mongodb.org/browse/CSHARP-6162)

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_Sources: CVE records from the CVE Program (cve.org). CVE® is a registered trademark of The MITRE Corporation. (https://www.cve.org/) This product uses data from the NVD API but is not endorsed or certified by the NVD. (https://nvd.nist.gov/) Known Exploited Vulnerabilities catalog from CISA. (https://www.cisa.gov/known-exploited-vulnerabilities-catalog) EPSS scores from FIRST (Exploit Prediction Scoring System). (https://www.first.org/epss/)_


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Canonical: https://rewindex.com/cve/CVE-2026-114644 · Markdown: https://rewindex.com/cve/CVE-2026-114644.md · JSON: https://rewindex.com/api/v1/cves/CVE-2026-114644 · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-10-26T02:17:08.351Z