CVE-2026-50269
AIOHTTP: CRLF injection in multipart headers
Description
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.
INFO
Published Date :
June 22, 2026, 4:30 p.m.
Last Modified :
June 22, 2026, 4:30 p.m.
Remotely Exploit :
No
Source :
GitHub_M
Affected Products
The following products are affected by CVE-2026-50269
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
No affected product recoded yet
Solution
- Update AIOHTTP to version 3.14.0 or later.
- Avoid passing user-controlled strings into MultipartWriter.append(headers=...)
- Avoid passing user-controlled strings into Payload.headers.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
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The following list is the news that have been mention
CVE-2026-50269 vulnerability anywhere in the article.