| Package | Affected versions | Patched versions |
|---|---|---|
| libmongocrypt | ≥ 1.5.0, < 1.20.5 | 1.20.5 |
Improper state management in MongoDB libmongocrypt can cause provider-specific data to be treated as an incompatible type when cleaning up a key document containing duplicate masterKey fields. An authenticated actor who can modify key vault documents, or a server that returns such a key document, can cause invalid memory access and invalid frees in the client process. This can terminate the application or corrupt process memory.
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