CVE-2026-18698 — Improper Authorization in MongoDB Server Allows Unauthorized Actions on System Collections via the validate Command

CVE-2026-18698

Improper Authorization in MongoDB Server Allows Unauthorized Actions on System Collections via the validate Command PUBLISHED

Description (CNA)

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 should require more specific privileges. This could result in exposure of collection metadata and, on certain deployment configurations, unauthorized modification of system collection data.

Affected (CNA)

Vendor / product	Versions
MongoDB / MongoDB Server	affected 8.3.0 before 8.3.8; affected 8.0 before 8.0.29; affected 7.0 before 7.0.40

CWE

CWE-863

References

https://jira.mongodb.org/browse/SERVER-130481

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.