cvedb.io
CVE-2026-50269
HIGH · CVSS 7.5
EPSS exploitation probability: 0%
Published 2026-06-22T18:16:42.920 · Last modified 2026-06-26T19:39:57.660

Summary

AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Prior to 3.14.0, attacker-controlled input included into multipart/payload headers can be used to modify a request to inject additional headers or similar. In the unlikely situation that an application is passing user-controlled strings into MultipartWriter.append(headers=...) or Payload.headers, then an attacker may be able to modify the request to inject headers or change the contents of the request. This vulnerability is fixed in 3.14.0.

Affected products

aiohttp — aiohttp

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References

This product uses data from the NVD API but is not endorsed or certified by the NVD. Informational only; not professional security advice.