CVE-2026-106435

The MongoDB Python Driver's binary accelerator can read outside a buffer when an application decodes malformed BSON containing a truncated regular-expression element without a trailing NUL byte. An actor who can supply BSON to the documented decode or decode_all API can cause the application process to terminate when the C extension is loaded. The driver's normal database wire-protocol path does not reach this code.

CVSS v3 5.1 MEDIUM

5.1^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 1.4 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity HIGH

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://jira.mongodb.org/browse/PYTHON-6110	Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:mongodb:python_driver:*:*:*:*:*:mongodb:*:*

History

15 Oct 2026, 17:00

Type	Values Removed	Values Added
CPE		cpe:2.3:a:mongodb:python_driver::::::mongodb::*
First Time		Mongodb Mongodb python Driver
References	~~() https://jira.mongodb.org/browse/PYTHON-6110 -~~	() https://jira.mongodb.org/browse/PYTHON-6110 - Vendor Advisory

08 Oct 2026, 21:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-10-08 21:17

Updated : 2026-10-15 17:00

NVD link : CVE-2026-106435

Mitre link : CVE-2026-106435

CVE.ORG link : CVE-2026-106435

JSON object : View

Products Affected

mongodb

python_driver

CWE

CWE-125

Out-of-bounds Read

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