AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Prior to version 3.13.4, for some multipart form fields, aiohttp read the entire field into memory before checking client_max_size. This issue has been patched in version 3.13.4.
Attack Parameters
Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Attack Requirements
None
No additional conditions
Privileges Required
None
No privileges needed
User Interaction
None
No user interaction needed
Impact Assessment
Confidentiality
None
No data leak
Integrity
None
No data modification
Availability
Low
Partial disruption
CVSS Vector v4.0
Weakness Type (CWE)
References 3
https://github.com/aio-libs/aiohttp/commit/cbb774f38330563422ca0c413a71021d7b94…
security-advisories@github.com
https://github.com/aio-libs/aiohttp/releases/tag/v3.13.4
security-advisories@github.com
https://github.com/aio-libs/aiohttp/security/advisories/GHSA-3wq7-rqq7-wx6j
security-advisories@github.com