CVE-2026-106432

The BSON encoder in the MongoDB PHP Driver converts a string length to a 32-bit value without validation. When an affected application encodes a string near 4 GiB, the allocation size can wrap while the copy operation uses the original length. The resulting heap buffer overflow can corrupt process memory or terminate the PHP process. Reaching this issue requires a non-default runtime configuration that permits multi-gigabyte values. No MongoDB server interaction is required.

CVSS v3 3.6 LOW

3.6^/10

CVSS v3 : LOW

Vector :

Exploitability : 1.0 / Impact : 2.5

Attack Vector LOCAL

Attack Complexity HIGH

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact LOW

Availability Impact LOW

Scope UNCHANGED

References

Link	Resource
https://jira.mongodb.org/browse/PHPC-2741	Vendor Advisory

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:mongodb:php_driver::::::mongodb::*
	cpe:2.3:a:mongodb:php_driver::::::mongodb::*
	cpe:2.3:a:mongodb:php_driver::::::mongodb::*

History

13 Oct 2026, 20:09

Type	Values Removed	Values Added
First Time		Mongodb php Driver Mongodb
CPE		cpe:2.3:a:mongodb:php_driver::::::mongodb::*
References	~~() https://jira.mongodb.org/browse/PHPC-2741 -~~	() https://jira.mongodb.org/browse/PHPC-2741 - Vendor Advisory

08 Oct 2026, 20:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-10-08 20:17

Updated : 2026-10-13 20:09

NVD link : CVE-2026-106432

Mitre link : CVE-2026-106432

CVE.ORG link : CVE-2026-106432

JSON object : View

Products Affected

mongodb

php_driver

CWE

CWE-681

Incorrect Conversion between Numeric Types

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