high8.8
CVE-2026-11933
A use-after-free vulnerability exists in MongoDB Server's server-side JavaScript engine when converting BSON documents to JavaScript arrays.
Impact
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.
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Mongodb | Mongodb | from 4.4.0 before 4.4.31 from 5.0.0 before 5.0.34 from 6.0.0 before 6.0.29 from 7.0.0 before 7.0.37 from 8.0.0 before 8.0.26 from 8.2.0 before 8.2.11 |