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CVE-2026-106435

5.9 medium SSVC exploitation: none Analyzed
NVD · CVE.org

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.

Fix

Patch, vendor advisory and mitigation references on NVD 1

Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.

Change history 3

  1. Cpes+1 CPE criteria (now 1)NVD modified 2026-10-15 17:00
  2. StatusUndergoing Analysis → AnalyzedNVD modified 2026-10-15 17:00
  3. First seenCVSS 5.9NVD modified 2026-10-09 12:17

Affected (CPE criteria) 1

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

References 1