GHSA-pqxq-w44r-73xw
AIOHTTP: Pure-Python parser request smuggling
At a glance
- Published
- Updated
- CVE
- CVE-2026-111750
- CVSS_V4
- CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:L/SC:N/SI:L/SA:L
Description
### Summary The pure Python parser is vulnerable to an HTTP request smuggling attack. ### Impact If users are using the Python parser (`AIOHTTP_NO_EXTENSIONS`, or not a standard wheel installed), then an application may be vulnerable to a request smuggling attack. ### Workaround Switch to the default C parser.
Affected packages
| Package | Versions |
|---|---|
| PyPI · aiohttp | introduced 0, fixed 3.14.4 |
References
- https://github.com/aio-libs/aiohttp/security/advisories/GHSA-pqxq-w44r-73xw WEB
- https://nvd.nist.gov/vuln/detail/CVE-2026-111750 ADVISORY
- https://github.com/aio-libs/aiohttp/commit/9b27347e61454d9f8ca2055f4c67a37dee336e83 WEB
- https://github.com/aio-libs/aiohttp PACKAGE
- https://github.com/aio-libs/aiohttp/releases/tag/v3.14.4 WEB
Sources
| Source | Licence |
|---|---|
| OSV.dev | CC-BY 4.0 — GitHub Advisory Database |