PT-2026-48299 · Mongodb · Mongodb Server

CVE-2026-9740

·

Published

2026-06-09

·

Updated

2026-06-30

CVSS v4.0

8.7

High

VectorAV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
Name of the Vulnerable Software and Affected Versions MongoDB Server (affected versions not specified)
Description A flaw in the BSON validation logic allows an unauthenticated user to crash the mongod process by sending a specially crafted message. The issue stems from uncontrolled mutual recursion between validation functions when handling certain nested binary data structures, which causes internal depth tracking to reset upon each re-entry.
Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

Uncontrolled Recursion

Found an issue in the description? Have something to add? Feel free to write us 👾
dbugs@ptsecurity.com

Weakness Enumeration

CWE-674

Related Identifiers

BIT-MONGODB-2026-9740
CVE-2026-9740

Affected Products

Mongodb Server