Log in Start free

Vulnerability · Published Feb 26, 2021 · Assigned by GitHub_M

CVE-2021-21330Open redirect vulnerability in aiohttp

Low 3.1

In plain English

A low-severity open redirect in aiohttp from aio-libs. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.9% (higher than 80% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)3.1Low
Exploit odds (30 days)1.9%top 20.2% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known

Official 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.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12python-aiohttp3.7.4-1DEBIAN-CVE-2021-21330
Debian:13python-aiohttp3.7.4-1DEBIAN-CVE-2021-21330
Debian:14python-aiohttp3.7.4-1DEBIAN-CVE-2021-21330
PyPIaiohttp3.7.4GHSA-v6wp-4m6f-gcjg
PyPIaiohttp3.7.4PYSEC-2021-76

Affected products (as reported)

VendorProductVersions
aio-libs aiohttp < 3.7.4

Weakness: CWE-601 · Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:N

References