CVE-2026-82059
MEDIUM
NVD
CVSS Score
5.3
Severity
MEDIUM
Published
Sep 08, 2026
Vendor
unknown
Description
An internal aggregation expression in MongoDB Server was incorrectly registered as accessible to any authenticated user rather than being restricted to internal cluster operations. By crafting a malformed index specification within this expression, an authenticated user with read-only privileges could trigger an assertion failure in the index key generation code path. In certain build configurations, this assertion failure results in termination of the mongod process, causing a denial of service to all connected clients.