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GHSA-8495-4g3g-x7pr

aiohttp allows request smuggling due to incorrect parsing of chunk extensions

Source: GitHub Advisory Database (reviewed) Moderate CVE-2024-52304

Packages

EcosystemPackageAffectedFixed in
PyPI aiohttp < 3.10.11 3.10.11

Details

As written in the advisory (Markdown source, shown as plain text).

### Summary The Python parser parses newlines in chunk extensions incorrectly which can lead to request smuggling vulnerabilities under certain conditions. ### Impact If a pure Python version of aiohttp is installed (i.e. without the usual C extensions) or `AIOHTTP_NO_EXTENSIONS` is enabled, then an attacker may be able to execute a request smuggling attack to bypass certain firewalls or proxy protections. ----- Patch: https://github.com/aio-libs/aiohttp/commit/259edc369075de63e6f3a4eaade058c62af0df71

References

External links from the advisory. They lead to third-party sites.