MongoDB (C Driver): Schwachstelle ermöglicht Denial of Service und Offenlegung von Informationen
WID-SEC-2026-1621 · first 21.05.2026 · updated 21.05.2026 · CVSS 7,1
What it is about
MongoDB ist ein Open-Source-Dokumentendatenbank. Ein entfernter, authentisierter Angreifer kann eine Schwachstelle in MongoDB C Driver ausnutzen, um einen Denial of Service Angriff durchzuführen, und um Informationen offenzulegen.
Under what conditions?
Over the network, but only with valid access (login required), for example with stolen credentials or as an insider.
What can happen in the worst case
An attacker could use the vulnerability to
- einen Denial of Service Angriff durchzuführen
- Informationen offenzulegen
Am I affected?
Affected according to the BSI:
- Open Source MongoDB C Driver <1.30.8
- Open Source MongoDB C Driver <2.2.4
The installed version is usually shown under “Help → About” or in the device’s admin interface.
What helps?
Update to at least:
- Open Source MongoDB C Driver 1.30.8
- Open Source MongoDB C Driver 2.2.4
Is the vulnerability already being exploited?
None of the CVEs is in the CISA catalogue of exploited vulnerabilities. That does not mean there are no attacks, only that none are documented.
Information and sources
- Original BSI advisory (WID)
- MongoDB Issues vom 2026-05-20 jira.mongodb.org
- GitHub Advisory Database vom 2026-05-20 github.com
- EU Vulnerability Database vom 2026-05-20 euvd.enisa.europa.eu
CVE: CVE-2026-9100
Source: BSI warning and information service (CERT-Bund); CISA. The assessment of the conditions is my reading of the BSI text; the external pages are in their original language.