Kurz gesagt
- CVE-2026-47265 ist eine Schwachstelle (HOCH (CVSS 7.5)) in aiohttp, aiohttp (aiohttp).
- Wahrscheinlichkeit einer Ausnutzung in den nächsten 30 Tagen (EPSS): 0.15%, höher als bei 4.2% 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
Cookies set with the cookies parameter on requests are sent after following a cross-origin redirect.
Impact
If a developer uses the cookies parameter on a per-request basis then sensitive data might be leaked to an attacker if they manage to control a redirect.
Workaround
If unable to upgrade, using a Cookie header in the headers parameter is not vulnerable.
Patch: https://github.com/aio-libs/aiohttp/commit/f54c40851b0d6c4bbdab97ba518a223adda32478
NVD description
AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Prior to version 3.14.0, cookies set with the `cookies` parameter on requests are sent after following a cross-origin redirect. If a developer uses the `cookies` parameter on a per-request basis then sensitive data might be leaked to an attacker if they manage to control a redirect. Version 3.14.0 patches the issue. If unable to upgrade, using a `Cookie` header in the `headers` parameter is not vulnerable.
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