Reliance on Untrusted Inputs in a Security Decision in MongoDB Server - CVE-2026-13059
Published: August 18, 2026
Vulnerability identifier: #VU144125
CSH Severity: Medium
CVSS v4: 8.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-13059
CWE-ID: CWE-807
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote user to bypass role-based access controls to perform unauthorized reads and writes.
The vulnerability exists due to reliance on untrusted inputs in a security decision in find, update, delete, and aggregate commands when processing certain client-supplied command parameters. A remote user can send crafted command parameters to bypass role-based query-level access controls to perform unauthorized reads and writes.
Only non-apiStrict configurations are vulnerable.
Affected software
MongoDB Server
How to mitigate CVE-2026-13059
Install security update from vendor's website.
MongoDB Server - addressed in versions 7.0.39, 8.0.28, 8.2.12, 8.3.7