# CVE-2026-88032

## Summary

- **CVE ID:** CVE-2026-88032
- **Severity:** HIGH
- **CVSS Score:** 8.2 (CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N)
- **CWE:** CWE-416
- **Published:** Sep 10, 2026
- **Last Modified:** Sep 11, 2026

## Description

A use-after-free in the reactive client-side encryption component of the MongoDB Java Driver can cause native resources to be freed while an affected encrypted operation is still using them when the operation is cancelled. A party able to cause such an operation to be cancelled may cause the hosting application process to terminate. Reaching the issue requires an affected reactive encryption configuration that retrieves KMS credentials on demand.

## Affected Products

- MongoDB — Java Driver (4.2.0)
- MongoDB — org.mongodb:mongodb-crypt Maven package (1.4.0)
- MongoDB — org.mongodb:mongodb-driver-reactivestreams Maven package (4.6.0)

## References

- [CNA](https://jira.mongodb.org/browse/JAVA-6276)

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-11._