CVE Vulnerabilities

CVE-2026-47265

Origin Validation Error

Published: Jun 02, 2026 | Modified: Jun 05, 2026
CVSS 3.x
7.5
HIGH
Source:
NVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
CVSS 2.x
RedHat/V2
RedHat/V3
6.5 MODERATE
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
Ubuntu
MEDIUM
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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.

Weakness

The product does not properly verify that the source of data or communication is valid.

Affected Software

NameVendorStart VersionEnd Version
AiohttpAiohttp*3.14.0 (excluding)

References