NULL pointer dereference in MongoDB Server - CVE-2026-8063
Published: August 18, 2026
Vulnerability identifier: #VU144152
CSH Severity: Low
CVSS v4: 7.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-8063
CWE-ID: CWE-476
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote user to cause a denial of service.
The vulnerability exists due to null pointer dereference in the aggregation pipeline inspection logic for $rankFusion and $scoreFusion when resolving a view with an empty input pipeline array. A remote user can run $rankFusion or $scoreFusion with an empty pipeline on a view to cause a denial of service.
Affected software
MongoDB Server
How to mitigate CVE-2026-8063
Install security update from vendor's website.
MongoDB Server - update to 8.2.7