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.
- Score
- CVSS 4.0 5.9 Medium
- Status
- Analyzed - cna@mongodb.com
- Published
- 2026-10-08
- Last modified
- 2026-10-15
- Weaknesses
- CWE-125
Affected products
References
- https://jira.mongodb.org/browse/PYTHON-6110
