CVE-2026-13063 libmongocrypt Improper Input Validation Leading to Process Termination
An authenticated user can crash the MongoDB server by sending a crafted aggregation command that triggers excessive memory allocation in libmongocrypt.
- 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-2026-13063?
CVE-2026-13063 is a medium-severity denial of service 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 standard read/write privileges can cause the mongod process to terminate due to an out-of-memory condition by sending a crafted aggregation command. MongoDB's libmongocrypt library insufficiently validates payload-supplied values, which can result in an excessively large memory allocation.
Weakness: CWE-190
Which versions are affected by CVE-2026-13063?
1 open source package ship an affected version, including mongodb. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
mongodb Bitnami | From 8.2.0 | 8.2.12, 8.3.7 |
Products include Mongodb Mongodb.
How do I fix CVE-2026-13063?
Upgrade mongodb to a fixed version for your release line: 8.2.12 or 8.3.7.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2026-13063 being exploited?
There is no known exploitation of CVE-2026-13063 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-2026-13063, GHSA-7jg8-fv7f-r7hw, MINI-58mf-2xh6-vqv5, MINI-h4gv-3r7g-jgp4, UBUNTU-CVE-2026-13063.