# CVE-2026-116641: MongoDB DB Tools TLS certificate validation bypass

Source: https://junglewise.ai/threats/cve-2026-116641-the-db-tools-rely-on-the-tls-implementation-in-golang-s-standard  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-10-28. Updated: 2026-10-28  
License: CC BY 4.0 with a link back

CVE-2026-116641 · Severity: medium · CVSS 6.8 · Published 2026-10-28

MongoDB's Database Tools, used to back up and restore databases, relies on TLS to secure connections. The tools were compiled with an outdated version of Go that lacks validation checks for known-compromised certificate authorities (eMudhra), potentially allowing attackers with a compromised CA certificate to intercept or impersonate database connections. This could lead to data theft, modification, or unauthorized access to database credentials.

Technologies: [MongoDB Database Tools](https://junglewise.ai/threats/technologies/database-tools). Vendors: [MongoDB](https://junglewise.ai/threats/vendors/mongodb).

## Quick answers

**Is CVE-2026-116641 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-116641 being exploited in the wild.

**How severe is CVE-2026-116641?** Medium severity, with a CVSS score of 6.8, published 28 October 2026.

**Which products and versions are affected?** MongoDB Database Tools 100.19.0 and earlier.

**Is there a fix for CVE-2026-116641?** Yes: fixed in DB Tools 100.20.0. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-116641 attacked?** It is attacked over the network.

**Am I affected by CVE-2026-116641?** Check whether you run MongoDB Database Tools at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## How to fix

- Fixed in DB Tools 100.20.0

## Technical details

The vulnerability stems from DB Tools version 100.19.0 being compiled with Golang 1.26.8, which does not include the eMudhra CA certificates in its crypto/x509 denylist. Golang 1.27.3 added these known-bad certificates to prevent their misuse in TLS validation. An attacker with access to a compromised eMudhra CA certificate could conduct man-in-the-middle attacks on TLS connections made by affected DB Tools versions, bypassing certificate validation. The fix requires updating to DB Tools 100.20.0, which uses Golang 1.27.3.

## Affected products

- MongoDB Database Tools 100.19.0 and earlier

## Timeline

- 2026-10-28: disclosed

## References

- [https://www.mongodb.com/docs/database-tools/release-notes/dbtools-100.20.0-changelog/](https://www.mongodb.com/docs/database-tools/release-notes/dbtools-100.20.0-changelog/)

## Related threats

- [MongoDB Database Tools mongorestore privilege escalation via collection name bypass](https://junglewise.ai/threats/cve-2026-119675-mongodb-database-tools-mongorestore-inconsistently-handles-the)
- [MongoDB Database Tools mongofiles path traversal in GridFS output](https://junglewise.ai/threats/cve-2026-119672-mongodb-database-tools-mongofiles-uses-a-database-stored-gridfs)