Mongodb Java Driver
CVE-2026-88032
A use-after-free in the reactive client-side encryption component of the MongoDB Java Driver can cause native resources to be freed while an affected encrypted operation is still using them when the operation is cancelled. A party able to cause such an operation to be cancelled may cause the hosting application process to terminate. Reaching the issue requires an affected reactive encryption configuration that retrieves KMS credentials on demand.
What this means for your business
- It affects Mongodb Java Driver. It matters if your company, or a supplier that handles your data, runs it.
- An attacker can use it remotely, over a network, without a login, and without anyone at your company clicking anything.
What to do
- 1Check whether your company or your suppliers run Mongodb Java Driver, and which version. The affected versions are listed further down this page.
- 2If you do, apply the vendor's fix. A patch or vendor advisory has been published.
Not sure if your company is exposed?
Fastnexa’s certified penetration testers can check whether attackers could use this flaw, or others like it, against your websites, apps and network. The full test is free for our first 10 founding clients until 31 December 2026.
Scoring
- CVSS
- 5.9 (v3.1)
- Vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H- CVSS v4
- 8.2
- Weakness
- CWE-416
- Assigned by
- cna@mongodb.com
Dates
- Published
- 2026-09-10
- Last modified
- 2026-09-16
- Sources
- NVD
Affected products
- Mongodb Java Driver4.2.0 - 5.11.1
As listed in the NVD configuration data. Not a statement about your estate.