CVE-2026-82058

Name of the Vulnerable Software and Affected Versions MongoDB (affected versions not specified)

Description A flaw in the JSON Schema validation error generation code allows an authenticated user with readWrite privileges to crash the mongod server. The issue occurs when a BSON document containing an array with a malformed numeric field name fails a $jsonSchema items type constraint. The error generation path performs unsafe numeric conversion on the user-controlled field name without proper exception handling, leading to an uncaught exception that terminates the server process. This is possible because the incoming wire protocol BSON validation does not enforce that array element field names are valid, in-range numeric indices.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.