CVE-2026-11933 — Post-authentication use-after-free in server-side JavaScript BSON-to-array conversion
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 priv…
Published: 2026-06-12 · CVSS: 8.7 · CVSS 4.0
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.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7