PT-2026-38343 · Mongodb · Mongodb Server+1

Published 2026-05-07 · Updated 2026-05-12 · CVE-2026-8063

Positive Technologies (AI Summary)

CVSS v3.1

6.5

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions MongoDB Server versions prior to 8.2.7

Description An authenticated user can cause a denial of service by crashing the mongod process. This occurs when running $rankFusion or $scoreFusion with an empty pipeline on a view. During view resolution, the server inspects the aggregation pipeline to identify if it starts with an Atlas Search stage; however, for $rankFusion and $scoreFusion, the server reads the first element of each stage's input pipeline array without verifying that the array contains data. Providing an empty pipeline leads to a null pointer dereference, which crashes the server.

Recommendations Update MongoDB Server to version 8.2.7 or later.

Fix

DoS

NULL Pointer Dereference

Weakness Enumeration

CWE-476

Related Identifiers

BIT-MONGODB-2026-8063

CVE-2026-8063

Affected Products

Mongodb Server

Mongodb

References · 11

• https://osv.dev/vulnerability/UBUNTU-CVE-2026-8063 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-8063 · Security Note
• https://ubuntu.com/security/CVE-2026-8063 · Vendor Advisory
• https://jira.mongodb.org/browse/SERVER-121851 · Patch
• https://osv.dev/vulnerability/BIT-mongodb-2026-8063 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2026-8063 · Security Note
• https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-8063 · Note
• https://t.me/CVEtracker/52955 · Telegram Post
• https://twitter.com/UpwindMDR/status/2052278561201926440 · Twitter Post
• https://twitter.com/TheRabbitPy/status/2052331698952589504 · Twitter Post
• https://twitter.com/CVEnew/status/2052400814476636284 · Twitter Post