DEBIAN-CVE-2021-21330

Advisory lineage Upstream: 1 Downstream: 1
Upstream
CVE-2021-21330
Downstream
DSA-4864-1
Published: 26 Feb 2021, 03:15
Last modified:15 Jun 2026, 19:03

Vulnerability Summary

Overall Risk (default)
low
24/100
CVSS Score
6.1 MEDIUM
3.1 (osv_debian)
EPSS Score
No data
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

26 Feb 2021, 03:15
Published
Vulnerability first disclosed
15 Jun 2026, 19:03
Last Modified
Vulnerability information updated

Description

aiohttp is an asynchronous HTTP client/server framework for asyncio and Python. In aiohttp before version 3.7.4 there is an open redirect vulnerability. A maliciously crafted link to an aiohttp-based web-server could redirect the browser to a different website. It is caused by a bug in the `aiohttp.web_middlewares.normalize_path_middleware` middleware. This security problem has been fixed in 3.7.4. Upgrade your dependency using pip as follows "pip install aiohttp >= 3.7.4". If upgrading is not an option for you, a workaround can be to avoid using `aiohttp.web_middlewares.normalize_path_middleware` in your applications.

CVSS Metrics

  • v3.1•MEDIUM•Score: 6.1CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Affected Systems

  • debian•python-aiohttp

    < 3.7.4-1 | < 3.7.4-1 | < 3.7.4-1 | < 3.7.4-1

References (1)