CVE-2020-7610: MongoDB Bson

Critical severity, CVSS 9.8. EPSS: 2.3% chance of exploitation in the next 30 days.

All versions of bson before 1.1.4 are vulnerable to Deserialization of Untrusted Data. The package will ignore an unknown value for an object's _bsotype, leading to cases where an object is serialized as a document rather than the intended BSON type.

Affected products

• MongoDB Bson: from 1.0.0, before 1.1.4 (fixed in 1.1.4)

Published 2020-03-30. Last modified 2026-06-17.