CVE-2026-111750: AIOHTTP: Pure-Python parser request smuggling

October 20, 2026

The pure Python parser is vulnerable to an HTTP request smuggling attack.

References

github.com/advisories/GHSA-pqxq-w44r-73xw
github.com/aio-libs/aiohttp/commit/9b27347e61454d9f8ca2055f4c67a37dee336e83
github.com/aio-libs/aiohttp/releases/tag/v3.14.4
github.com/aio-libs/aiohttp/security/advisories/GHSA-pqxq-w44r-73xw
nvd.nist.gov/vuln/detail/CVE-2026-111750

Code Behaviors & Features

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