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CVE-2026-106432 Details

Description

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.

Metrics

CVSS 3.x Severity and Vector Strings:

NIST: [email protected]CVSS-B:8.2 HIGHVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H

CNA: [email protected]CVSS-B:3.6 LOWVector:CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:L

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://jira.mongodb.org/browse/PHPC-2741	[email protected]	Vendor Advisory

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-681	Incorrect Conversion between Numeric Types	[email protected]

Affected Products

Product	Versions
mongodb php driver	>= 1.3.0, < 1.21.1 >= 2.0.0, < 2.1.11 >= 2.2.0, < 2.5.4
CPE cpe:2.3:a:mongodb:php_driver::::::mongodb::* Remediation No remediation found in references.

Change History

3 change records found show changes

Date	Action	Recorded By
Oct 13, 2026	Initial Analysis	[email protected]
Oct 8, 2026	New CVE Received	[email protected]
Oct 8, 2026	CVE Modified	CISA-ADP