CVE-2026-106435Medium· 5.1▾ SunlitThe 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 docume…
▾ Sunlit zone — Low / medium · no exploitation signal
impact 28.1 · likelihood 0 · exploitation 0
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Stakeholder-Specific Vulnerability Categorization from CISA's ADP record at CVE.org: whether exploitation is observed, whether an attack can be automated, and how much of the system is at stake.
Exploit-prediction probability, daily snapshots since Oct 10.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via NVD
0.1%
Last analysed / modified upstream
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.
python_driver < 4.18.3Upgrade past the affected range:
python_driver 4.18.3Affected packages:
pymongo >= 3.9.0, <= 4.18.2Patched in:
pymongo 4.18.3Connected by shared product, vendor, weakness, or advisory.
CVE-2026-88029High· 8.3Improper neutralization of special elements in data query logic in the GridFS component of the MongoDB Python Driver can cause a caller-supplied structured file identifier to be interpreted as a query condition rather than as a literal i…
CVE-2026-96747Medium· 5.0The client-side field level encryption support in the MongoDB Python Driver can treat a key management endpoint value ending in ".sock" as a local Unix domain socket path rather than a remote host
CVE-2026-96749High· 8.4An integer overflow in the BSON document encoding component of the MongoDB Python Driver's bundled native extension may occur when a single document is built from an unusually large amount of caller-supplied data
CVE-2026-96748Medium· 6.5PyMongo's connection string parsing decodes percent-encoded characters in the host portion before the host list is separated on its delimiters
CVE-2026-82066Medium· 4.3A heap out-of-bounds read security issue exists in the query planning component of MongoDB Server
CVE-2026-84968Medium· 5.3An out-of-bounds read in the BSON decoding component of the MongoDB PHP driver may allow an unauthenticated party who supplies specially formed input to have a small amount of adjacent process memory copied into an error message that is …