CVE-2026-13071 Server-Side JavaScript Aggregation Expression Memory Safety Issue Leading to Process Termination
An authenticated user can crash the MongoDB server by triggering a use-after-free vulnerability in server-side JavaScript aggregation expressions.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-13071?
CVE-2026-13071 is a high-severity use after free vulnerability in Mongodb Mongodb, published on 22 Jul 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
An authenticated user with read access can cause the mongod process to be terminated through certain aggregation expressions that execute server-side JavaScript. The issue involves improper memory handling during document processing.
Weakness: CWE-416
Which versions are affected by CVE-2026-13071?
1 open source package ship an affected version, including mongodb. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
mongodb Bitnami | From 7.0.0 | 7.0.39, 8.0.28, 8.2.12, 8.3.7 |
Products include Mongodb Mongodb.
How do I fix CVE-2026-13071?
Upgrade mongodb to a fixed version for your release line: 7.0.39, 8.0.28, 8.2.12 or 8.3.7.
Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.
Is CVE-2026-13071 being exploited?
There is no known exploitation of CVE-2026-13071 in the wild and no public exploit code.
Other vulnerabilities in Mongodb Mongodb
- CVE-2025-14847 MongoDB and MongoDB Server Improper Handling of Length Parameter Inconsistency
- CVE-2026-82067 Auth bypass in MongoDB Server
- CVE-2026-13072 MongoDB Improper Input Validation in Compute Mode External Data Processing Leading to Memory Corruption
- CVE-2017-15535 Denial of service in n/a
- CVE-2026-18691 Improper Authentication in MongoDB Intra-Cluster Connections Allows Credential Exposure
Sources
Also known as BIT-mongodb-2026-13071, GHSA-hw74-92vg-cf79, MINI-6fwp-q874-cw23, MINI-8v8p-f39w-68gc, MINI-mxj7-rv6x-6v57, MINI-qw4h-38m7-3w52 and 1 more.