CVE-2026-47265
AIOHTTP vulnerable to cross-origin redirect with per-request cookies
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-346 |
| Vendor | aio-libs |
| Product | aiohttp |
| Published | Jun 2, 2026 |
| Last Updated | Jun 3, 2026 |
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Affected Versions
aio-libs / aiohttp
< 3.14.0