Use After Free Affecting mongodb package, versions [7.0.0-alpha,7.0.34)[8.0.0-alpha,8.0.23)[8.2.0-alpha,8.2.9)[8.3.0-alpha0,8.3.2)


Severity

Recommended
0.0
medium
0
10

CVSS assessment by Snyk's Security Team. Learn more

Threat Intelligence

EPSS
0.13% (3rd percentile)

Do your applications use this vulnerable package?

In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.

Test your applications

Snyk Learn

Learn about Use After Free vulnerabilities in an interactive lesson.

Start learning
  • Snyk IDSNYK-UNMANAGED-MONGODB-16678153
  • published14 May 2026
  • disclosed13 May 2026
  • creditUnknown

Introduced: 13 May 2026

CVE-2026-8201  (opens in a new tab)
CWE-416  (opens in a new tab)

How to fix?

Upgrade mongodb to version 7.0.34, 8.0.23, 8.2.9, 8.3.2 or higher.

Overview

Affected versions of this package are vulnerable to Use After Free in the mongocryptd process when handling positional projections on encrypted fields. An attacker can cause memory corruption or execute arbitrary code by crafting a malicious Field-Level Encryption query structure. This is only exploitable if the attacker has control over the structure of a client's FLE-related query.

References

CVSS Base Scores

version 4.0
version 3.1