CVE-2026-112368
Received Received - Intake

Uncontrolled Recursion in MongoDB PHP Driver BSON Decoding

Publication date: 2026-10-19

Last updated on: 2026-10-19

Assigner: MongoDB, Inc.

Description
An uncontrolled recursion weakness in the BSON decoding logic of the MongoDB PHP driver may allow an unauthenticated party who can supply crafted binary document data to the decoder to exhaust the process stack. This may cause the PHP process using the driver to terminate unexpectedly, resulting in a loss of availability for that process. The condition occurs below the PHP layer and cannot be intercepted by application-level error handling.

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Meta Information

Published
2026-10-19
Last Modified
2026-10-19
Generated
2026-10-19
AI Q&A
2026-10-19
EPSS Evaluated
N/A
NVD
CVE-2026-112368
EUVD
EUVD-2026-104414

Affected Vendors & Products

Showing 3 associated CPEs
Vendor Product Version / Range
MongoDB Inc. PHP Driver 1.0.0
MongoDB Inc. PHP Driver 2.1.0
MongoDB Inc. PHP Driver 2.5.0

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-674 The product does not properly control the amount of recursion that takes place, consuming excessive resources, such as allocated memory or the program stack.

Attack-Flow Graph

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Executive Summary

This vulnerability is an uncontrolled recursion weakness in the BSON decoding logic of the MongoDB PHP driver. It allows an unauthenticated attacker to supply crafted binary document data to the decoder, causing the process stack to exhaust. This leads to unexpected termination of the PHP process using the driver, resulting in a loss of availability.

Detection Guidance

Detecting this vulnerability requires monitoring for stack exhaustion in PHP processes using the MongoDB PHP driver. Check for unexpected process terminations or high stack usage in PHP applications interfacing with MongoDB. Use system monitoring tools like 'top', 'htop', or 'ps' to observe process behavior. Enable PHP error logs to capture any stack overflow errors.

Impact Analysis

The impact includes unexpected termination of PHP processes using the MongoDB PHP driver, leading to service disruptions and downtime. This can affect applications relying on the driver for database operations, causing loss of availability for those services.

Mitigation Strategies

Immediately update the MongoDB PHP driver to the latest patched version. If updating is not possible, restrict network access to MongoDB instances to trusted sources only. Monitor PHP processes for signs of stack exhaustion and implement rate limiting for database queries. Consider disabling the driver if not essential.

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