CVE-2026-106435
MEDIUMCVSS 5.1Description
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.
Timeline
Published:October 8th, 2026 9:17 PM
Last modified:October 15th, 2026 5:00 PM
CVSS Scoring
CVSS v3: 5.1 (MEDIUM)
CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
Affected Software
From NVD CPE configuration data
Vendors
mongodb
Products
python_driver
Weaknesses (CWE)
References & Reports
Advisories, patches, and third-party reports
Source: NIST NVD · Data may lag official sources by up to one minute