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CVE-2026-82057

Type Confusion in MongoDB Server WiredTiger Storage Engine via Custom Collection Configuration Leads to Persistent Denial of Service PUBLISHED

Description (CNA)

A security issue was discovered in MongoDB where an authenticated user with readWrite privileges could crash the mongod server process. By specifying a custom WiredTiger storage configuration option with an incompatible value during collection creation, a user could cause a type confusion in the storage engine layer. When documents were subsequently read from the misconfigured collection, the resulting mismatch in expected data format led to corrupted memory interpretation and a server crash. The crafted collection configuration persists across restarts, requiring manual operator intervention to remediate.

Affected (CNA)

Vendor / productVersions
MongoDB / MongoDB Serveraffected 8.3.0 before 8.3.9

CWE

CWE-843

References

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.