CVE-2026-13056 A user with read access can cause a DoS by executing a specifically crafted query to consume a large amount of RAM

What is CVE-2026-13056?

CVE-2026-13056 is a high-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

Using expressions that generate large arrays it is possible to craft a query that creates very large intermediate objects in memory, causing the server to crash with OOM error.

Weakness: CWE-1325

Which versions are affected by CVE-2026-13056?

1 open source package ship an affected version, including mongodb. It affects 1 product.

Products include Mongodb Mongodb.

How do I fix CVE-2026-13056?

Upgrade mongodb to a fixed version for your release line: 8.0.28 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-2026-13056 being exploited?

There is no known exploitation of CVE-2026-13056 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 Exploited High 8.7
• CVE-2026-82067 Auth bypass in MongoDB Server Critical 9.2
• CVE-2026-13072 MongoDB Improper Input Validation in Compute Mode External Data Processing Leading to Memory Corruption Critical 9.2
• CVE-2017-15535 Denial of service in n/a Critical 9.1
• CVE-2026-18691 Improper Authentication in MongoDB Intra-Cluster Connections Allows Credential Exposure Critical 9.0

All Mongodb Mongodb vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as BIT-mongodb-2026-13056, GHSA-7wp7-648j-j534, MINI-3g59-pgxr-9wjw, MINI-793v-cmhv-c2vj, UBUNTU-CVE-2026-13056.