CVE-2026-8053 FlatBSON Duplicate Field Index Drift
An authenticated user with write privileges can trigger an out-of-bounds memory write in MongoDB Server, potentially leading to arbitrary code execution.
- 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-2026-8053?
CVE-2026-8053 is a high-severity memory corruption vulnerability in Mongodb Mongodb, published on 12 May 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
An issue in MongoDB Server's time-series collection implementation allows an authenticated user with database write privileges to trigger an out-of-bounds memory write in the mongod process. The issue results from an inconsistency in the internal field-name-to-index mapping within the time-series bucket catalog. Under certain conditions this can result in arbitrary code execution.
This issue impacts MongoDB Server v5.0 versions prior to 5.0.33, v6.0 versions prior to 6.0.28, v7.0 versions prior to 7.0.34, v8.0 versions prior to 8.0.23, v8.2 versions prior to 8.2.9 and v8.3 versions prior to 8.3.2.
Weakness: CWE-787
Which versions are affected by CVE-2026-8053?
1 open source package ship an affected version, including mongodb. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
mongodb Bitnami | From 5.0.0 | 5.0.33, 6.0.28, 7.0.34, 8.0.23, 8.2.9, 8.3.2 |
Products include Mongodb Mongodb.
How do I fix CVE-2026-8053?
Upgrade mongodb to a fixed version for your release line: 5.0.33, 6.0.28, 7.0.34 or 8.0.23.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2026-8053 being exploited?
There is no known exploitation of CVE-2026-8053 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-2026-8053, GHSA-pr63-cc36-q84h, MINI-3453-3h8w-c22h, MINI-8wcm-crm8-pq24, MINI-9cg3-3qwj-gpc8, UBUNTU-CVE-2026-8053.