Out-of-bounds write in MongoDB Server - CVE-2026-8053
Published: May 16, 2026
Vulnerability identifier: #VU131621
CSH Severity: Medium
CVSS v4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-8053
CWE-ID: CWE-787
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote user to execute arbitrary code.
The vulnerability exists due to an out-of-bounds write in the time-series bucket catalog when inserting data with duplicate field names into time-series collections. A remote user can insert specially crafted data to execute arbitrary code.
The issue results from an inconsistency in the internal field-name-to-index mapping.
Affected software
MongoDB Server
How to mitigate CVE-2026-8053
Install security update from vendor's website.
MongoDB Server - addressed in versions 5.0.33, 6.0.28, 7.0.34, 8.0.23, 8.2.9, 8.3.2