# 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.

- **Severity:** High 7.1 (`CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H`)
- **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:** Yes
- **Published:** 6 Aug 2019
- **Updated:** 4 Aug 2024
- **Also known as:** CLSA-2022-1668117586, GHSA-gqrr-9cvj-jrrq, UBUNTU-CVE-2019-2386, USN-5052-1

## 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.

Weakness: CWE-613 (DEPRECATED: Insufficient Session Expiration), CWE-285 (Improper Authorization)

## Which versions are affected by CVE-2019-2386?

It affects 1 product.


Products: Mongodb Mongodb.

## How do I fix CVE-2019-2386?

Upgrade to a fixed version.

## 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](https://insights.sbomify.com/CVE-2025-14847/): MongoDB and MongoDB Server Improper Handling of Length Parameter Inconsistency (high 8.7, exploited in the wild)
- [CVE-2026-82067](https://insights.sbomify.com/CVE-2026-82067/): Auth bypass in MongoDB Server (critical 9.2)
- [CVE-2026-13072](https://insights.sbomify.com/CVE-2026-13072/): MongoDB Improper Input Validation in Compute Mode External Data Processing Leading to Memory Corruption (critical 9.2)
- [CVE-2017-15535](https://insights.sbomify.com/CVE-2017-15535/): Denial of service in n/a (critical 9.1)
- [CVE-2026-18691](https://insights.sbomify.com/CVE-2026-18691/): Improper Authentication in MongoDB Intra-Cluster Connections Allows Credential Exposure (critical 9.0)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2019-2386 and fix it if it is affected.

What it is: 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.
Exploitation: There is no known exploitation of CVE-2019-2386 in the wild and no public exploit code.

Affected product: Mongodb Mongodb. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2019-2386/ (Markdown: https://insights.sbomify.com/CVE-2019-2386/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2019-2386
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2019-2386
- OSV: https://osv.dev/vulnerability/CVE-2019-2386

---
From sbomify Insights: https://insights.sbomify.com/CVE-2019-2386/
Summaries are generated and may contain mistakes; the official description above is the record.