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CVE-2026-34525
Published: Apr 1, 2026
Modified: Apr 2, 2026
PUBLISHED
Description
AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Prior to version 3.13.4, multiple Host headers were allowed in aiohttp. This issue has been patched in version 3.13.4.
| Vendor | Product | Versions |
|---|---|---|
aio-libs | aiohttp | affected < 3.13.4 |
References
https://github.com/aio-libs/aiohttp/security/advisories/GHSA-c427-h43c-vf67
x_refsource_CONFIRM
https://github.com/aio-libs/aiohttp/releases/tag/v3.13.4
x_refsource_MISC
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