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CVE-2026-106432

3.6 · LOW

The BSON encoder in the MongoDB PHP Driver converts a string length to a 32-bit value without validation.

Published Oct 8, 2026mongodbCWE-681EPSS 0.17%

Overview

CVE-2026-106432 is a low-severity vulnerability affecting mongodb php_driver. It was published on October 8, 2026 and has a CVSS 3.1 base score of 3.6 (LOW).

This vulnerability has a CVSS 3.1 base score of 3.6, rated LOW. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

Technical 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.

Remediation

Check the references section for vendor advisories and patches from mongodb. Update php_driver to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

Affected products

VendorProductVersionsStatus
mongodbphp_driver>= 1.3.0, < 1.21.1Affected

References

Refjira.mongodb.org/browse/PHPC-2741

How CyberStrike helps

Frequently asked questions

What is CVE-2026-106432?

CVE-2026-106432 is a low-severity vulnerability affecting mongodb php_driver. It was published on October 8, 2026 and has a CVSS 3.1 base score of 3.6 (LOW).

How severe is CVE-2026-106432?

This vulnerability has a CVSS 3.1 base score of 3.6, rated LOW. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2026-106432?

Check the references section for vendor advisories and patches from mongodb. Update php_driver to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2026-106432?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-106432 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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