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CVE-2026-82059

Improper Access Restriction of Internal Aggregation Expression in MongoDB Server Leads to Assertion Failure and Denial of Service PUBLISHED

Description (CNA)

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.

Affected (CNA)

Vendor / productVersions
MongoDB / MongoDB Serveraffected 8.3.0 before 8.3.9; affected 8.0.0 before 8.0.30; affected 7.0.0 before 7.0.41

CWE

CWE-617

References

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.