Kurz gesagt
- CVE-2026-50269 ist eine Schwachstelle (HOCH (CVSS 7.5)) in aiohttp, aiohttp (aiohttp).
- Wahrscheinlichkeit einer Ausnutzung in den nächsten 30 Tagen (EPSS): 0.53%, höher als bei 45.0% aller Schwachstellen.
- Abhilfe: auf 3.14.0 oder neuer aktualisieren.
| Package | Affected versions | Patched versions |
|---|
| aiohttp PyPI | < 3.14.0
| 3.14.0
|
| aiohttp | < 3.14.0
| 3.14.0
|
Description
Summary
Attacker-controlled input included into multipart/payload headers can be used to modify a request to inject additional headers or similar.
Impact
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.
Workaround
Sanitise such user input.
Patch: https://github.com/aio-libs/aiohttp/commit/bf88077ebb14f4c29924b8e8904cba20c55c28b8
NVD 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.
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