What’s Vulnerable › Vulnerabilities
CVE-2026-88032: Application denial of service via cancellation race in reactive client-side encryption in MongoDB Java Driver
- Severity: high (CVSS 7.5 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.3% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2026-09-10 · updated 2026-09-16
- Weakness: CWE-416
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: from 4.2.0 before 5.11.1 — fixed in 5.11.1
How to fix
Upgrade to a fixed version: MongoDB Java Driver 5.11.1. Check the vendor advisory for mitigations.
References
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