| Package | Affected versions | Patched versions |
|---|---|---|
| aiohttp | < 3.13.4 | 3.13.4 |
| aiohttp | < 3.13.4 | 3.13.4 |
For some multipart form fields, aiohttp read the entire field into memory before checking client_max_size.
If an application uses Request.post() an attacker can send a specially crafted multipart request to force significant temporary memory allocation even when the request is ultimately rejected.
Patch: https://github.com/aio-libs/aiohttp/commit/cbb774f38330563422ca0c413a71021d7b944145
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