PT-2026-38343 · Mongodb · Mongodb Server

Published 2026-05-07 · Updated 2026-05-07 · CVE-2026-8063

Mitre

CVSS v3.1

6.5

Medium

Base vector

AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

An authenticated user can crash mongod when running $rankFusion or $scoreFusion with an empty pipeline on a view.

When resolving a view, the server inspects the aggregation pipeline to determine whether it begins with an Atlas Search stage. For $rankFusion and $scoreFusion, this inspection reads the first element on each stage’s input pipeline array without first verifying that the array is non-empty. Supplying an empty pipeline causes a null pointer dereference and crashes the server.

This issue affects MongoDB Server 8.2 versions prior to 8.2.7.

Fix

NULL Pointer Dereference

Weakness Enumeration

CWE-476

Related Identifiers

CVE-2026-8063

Affected Products

Mongodb Server

References · 2

• https://nvd.nist.gov/vuln/detail/CVE-2026-8063 · Security Note
• https://jira.mongodb.org/browse/SERVER-121851 · Note