MongoDB PHP Driver up to 1.21.11/2.1.11/2.5.4 BSON Decoding recursion

Summaryinfo

A vulnerability, which was classified as critical, was found in MongoDB PHP Driver up to 1.21.11/2.1.11/2.5.4. This affects an unknown part of the component BSON Decoding. The manipulation results in recursion. This vulnerability is cataloged as CVE-2026-112368. The attack may be launched remotely. There is no exploit available. You should upgrade the affected component.

Detailsinfo

A vulnerability classified as critical has been found in MongoDB PHP Driver up to 1.21.11/2.1.11/2.5.4. Affected is some unknown functionality of the component BSON Decoding. The manipulation with an unknown input leads to a recursion vulnerability. CWE is classifying the issue as 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. This is going to have an impact on availability. CVE summarizes:

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.

The advisory is shared for download at jira.mongodb.org. This vulnerability is traded as CVE-2026-112368 since 10/19/2026. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1499.

Upgrading to version 1.21.12, 2.1.12 or 2.5.5 eliminates this vulnerability.

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Productinfo

Type

• Database Software

Vendor

• MongoDB

Name

• PHP Driver

Version

• 1.21.0
• 1.21.1
• 1.21.2
• 1.21.3
• 1.21.4
• 1.21.5
• 1.21.6
• 1.21.7
• 1.21.8
• 1.21.9
• 1.21.10
• 1.21.11
• 2.1.0
• 2.1.1
• 2.1.2
• 2.1.3
• 2.1.4
• 2.1.5
• 2.1.6
• 2.1.7
• 2.1.8
• 2.1.9
• 2.1.10
• 2.1.11
• 2.5.0
• 2.5.1
• 2.5.2
• 2.5.3
• 2.5.4

License

• open-source

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CPE 2.2info

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