medium6.3
CVE-2026-111748
AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python.
Impact
AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Prior to 3.14.4, an attacker can send an absolute-form request that causes Request.scheme to use attacker-controlled request-target scheme data instead of the connection protocol. Applications that use Request.scheme for security decisions can consequently be tricked into treating an unencrypted connection as encrypted or an encrypted connection as unencrypted. This issue is fixed in version 3.14.4.
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| pip | aiohttp | <= 3.14.3 | 3.14.4 |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- https://github.com/advisories/GHSA-f9xw-jh8m-3mwq
- https://github.com/aio-libs/aiohttp/security/advisories/GHSA-f9xw-jh8m-3mwq
- https://nvd.nist.gov/vuln/detail/CVE-2026-111748
- https://github.com/aio-libs/aiohttp/commit/6d4e7b01f9b951aa084a75d7356e907d4ee80411
- https://github.com/aio-libs/aiohttp/releases/tag/v3.14.4