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.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Mongodb | — | Upgrade to the latest version of MongoDBUpgrade MongoDB to version 8.3.9 | Sep 23, 2026 | Sep 8, 2026 |
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