CVE-2026-18690

HIGH

Improper Authorization in MongoDB Server Allows Unauthorized Actions on System Collections

Title source: CVE List
STIX 2.1 vulnerability

Record summary

CVE-2026-18690 has a selected CVSS score of 7.2 (high).

Description

An issue in MongoDB Server could allow an authenticated user with a limited database-scoped role to perform an action against protected system collections that their assigned privileges should not permit. This could result in critical system collections being dropped and recreated without proper authorization.

Description source: CVE List

Exploitation context

CISA SSVC decision

ExploitationNone
AutomatableNo
Technical impactPartial

CISA Coordinator · SSVC 2.0.3 · Evaluated Aug 11, 2026 · Source: CVE List

Affected products and versions

1
ProductSourceVersion range

MongoDB Server

Browse MongoDB / MongoDB Server

Default status: unaffected

CVE List8.3.0 to < 8.3.8affected
8.0 to < 8.0.29affected
7.0 to < 7.0.40affected

References

2