CVE-2026-11933 – Post-authentication use-after-free in server-side JavaScript BSON-to-array conversion

CVE ID :CVE-2026-11933

Published : June 12, 2026, 2:16 a.m. | 1 hour, 4 minutes ago

Description :A use-after-free vulnerability exists in MongoDB Server’s server-side JavaScript engine when converting BSON documents to JavaScript arrays. An authenticated user with read privileges who is able to run server-side JavaScript (for example, via $where or $function) can cause the server to access memory that has already been freed. This may result in disclosure of information from the mongod process memory or a denial of service through a server crash.

Severity: 8.8 | HIGH

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