CVE-2026-82063 Use-After-Free in MongoDB Server Cursor Management Component Leads to Denial of Service
An authenticated user can trigger a use-after-free in MongoDB cursor management, causing a server crash and denial of service.
- 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-2026-82063?
CVE-2026-82063 is a medium-severity use after free vulnerability in Mongodb Mongodb, published on 8 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
A use-after-free security issue in the cursor management component of MongoDB Server allows an authenticated user to cause a denial of service. Under specific timing conditions during cursor operations, a stale pointer to a freed resource may be retained and subsequently dereferenced during cursor cleanup, leading to a server process crash.
Weakness: CWE-416
Which versions are affected by CVE-2026-82063?
1 open source package ship an affected version, including mongodb. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
mongodb Bitnami | From 7.0.0 | 7.0.41, 8.0.30, 8.3.9 |
Products include Mongodb Mongodb.
How do I fix CVE-2026-82063?
Upgrade mongodb to a fixed version for your release line: 7.0.41, 8.0.30 or 8.3.9.
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-2026-82063 being exploited?
There is no known exploitation of CVE-2026-82063 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-2026-82063, GHSA-6pwv-5gr2-9rh2, MINI-7vx4-x63w-6g75, MINI-93r4-cg42-2fc7, MINI-x247-hwvc-56mg, UBUNTU-CVE-2026-82063.