CVE-2019-2386 Authorization session conflation
Authenticated users can retain access after account deletion if new accounts reuse deleted names, leading to unauthorized data access.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2019-2386?
CVE-2019-2386 is a high-severity authentication bypass vulnerability in Mongodb Mongodb, published on 6 Aug 2019. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Official description
After user deletion in MongoDB Server the improper invalidation of authorization sessions allows an authenticated user's session to persist and become conflated with new accounts, if those accounts reuse the names of deleted ones. This issue affects MongoDB Server v4.0 versions prior to 4.0.9; MongoDB Server v3.6 versions prior to 3.6.13 and MongoDB Server v3.4 versions prior to 3.4.22.
Workaround: After deleting one or more users, restart any nodes which may have had active user authorization sessions.
Refrain from creating user accounts with the same name as previously deleted accounts.
Which versions are affected by CVE-2019-2386?
It affects 1 product.
Products include Mongodb Mongodb.
How do I fix CVE-2019-2386?
Upgrade to a fixed version.
Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.
Is CVE-2019-2386 being exploited?
There is no known exploitation of CVE-2019-2386 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 CLSA-2022-1668117586, GHSA-gqrr-9cvj-jrrq, UBUNTU-CVE-2019-2386, USN-5052-1.