Incorrect authorization in MongoDB Server - CVE-2026-18712
Published: August 18, 2026
Vulnerability identifier: #VU144149
CSH Severity: Medium
CVSS v4: 7.2 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-18712
CWE-ID: CWE-863
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote user to modify or destroy data in a different collection.
The vulnerability exists due to improper authorization in Queryable Encryption maintenance operations when processing internal metadata references for operations on other namespaces. A remote user can manipulate certain metadata references to modify or destroy data in a different collection.
Exploitation requires privileges on one encrypted collection.
Affected software
MongoDB Server
How to mitigate CVE-2026-18712
Install security update from vendor's website.
MongoDB Server - addressed in versions 7.0.40, 8.0.29, 8.3.8