{"id":"CVE-2021-21330","details":"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 \u003e= 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.","aliases":["GHSA-v6wp-4m6f-gcjg","PYSEC-2021-76"],"modified":"2026-05-18T05:51:20.868485324Z","published":"2021-02-26T03:15:12.840Z","related":["SUSE-RU-2022:3275-1","SUSE-SU-2021:1313-1","openSUSE-SU-2024:13209-1"],"database_specific":{"unresolved_ranges":[{"vendor_product":"debian:debian_linux","cpes":["cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*"],"extracted_events":[{"last_affected":"10.0"}],"source":"CPE_FIELD"},{"vendor_product":"fedoraproject:fedora","extracted_events":[{"last_affected":"33"},{"last_affected":"34"}],"cpes":["cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*","cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*"],"source":"CPE_FIELD"}]},"references":[{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FU7ENI54JNEK3PHEFGCE46DGMFNTVU6L/"},{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JN3V7CZJRT4QFCVXB6LDPCJH7NAOFCA5/"},{"type":"ADVISORY","url":"https://github.com/aio-libs/aiohttp/blob/master/CHANGES.rst#374-2021-02-25"},{"type":"ADVISORY","url":"https://github.com/aio-libs/aiohttp/security/advisories/GHSA-v6wp-4m6f-gcjg"},{"type":"ADVISORY","url":"https://security.gentoo.org/glsa/202208-19"},{"type":"ADVISORY","url":"https://www.debian.org/security/2021/dsa-4864"},{"type":"FIX","url":"https://github.com/aio-libs/aiohttp/commit/2545222a3853e31ace15d87ae0e2effb7da0c96b"},{"type":"PACKAGE","url":"https://pypi.org/project/aiohttp/"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/aio-libs/aiohttp","events":[{"introduced":"0"},{"fixed":"0a26acc1de9e1b0244456b7881ec16ba8bb64fc3"},{"fixed":"2545222a3853e31ace15d87ae0e2effb7da0c96b"}],"database_specific":{"extracted_events":[{"introduced":"0"},{"fixed":"3.7.4"}],"cpe":"cpe:2.3:a:aiohttp:aiohttp:*:*:*:*:*:*:*:*","source":["CPE_FIELD","REFERENCES"]}}],"versions":["v3.7.3","v3.7.2","v3.7.1","v3.7.0","v3.7.0b1","v3.7.0b0","v3.6.2","v3.6.2a2","v3.6.2a1","v4.0.0a1","v3.6.1","v3.6.1b4","v3.6.1b3","v3.6.0","v3.6.0b0","v3.6.0a12","v3.6.0a11","v3.6.0a10","v3.6.0a9","v3.6.0a8","v3.6.0a7","v3.6.0a6","v3.6.0a5","v3.6.0a4","v3.6.0a3","v3.6.0a2","v3.6.0a1","v3.6.0a0","v3.5.4","v3.5.3","v3.5.2","v4.0.0a0","v3.5.1","v3.5.0","v3.5.0b3","v3.5.0b2","v3.5.0b1","v3.5.0a1","v3.4.0","v3.4.0b2","v3.4.0b1","v3.4.0a3","v3.4.0a0","v3.2.0","v3.1.0","v3.0.0b4","v3.0.0b3","v3.0.0b2","v3.0.0b1","v3.0.0b0","v2.3.0","v2.3.0a4","v2.3.0a3","v2.3.0a2","v2.3.0a1","v2.2.0","v2.1.0","2.0.0","2.0.0rc1","1.3.0","v1.2.0","v1.1.1","v1.1.0","v1.0.1","v1.0.0","v0.22.1","v0.22.0","v0.22.0b6","v0.22.0b5","v0.22.0b4","v0.22.0b3","v0.22.0b2","v0.22.0b1","v0.22.0b0","4v0.21.6","v0.21.0","v0.20.1","v0.20.0","v0.19.0","v0.18.0","v0.17.0","v0.16.3","v0.16.2","v0.16.1","v0.16.0","v0.15.3","0.15.2","v0.15.2","v0.15.1","v0.15.0","v0.14.4","v0.14.3","v0.14.2","v0.14.1","v0.14.0","v0.13.1","v0.13.0","v0.12.0","v0.11.0","v0.10.1","v0.10.0","v0.9.2","v0.9.1","v0.9.0","v0.8.4","v0.8.3","0.8.2","v0.8.1","v0.8.0","v0.7.3","v0.7.2","v0.7.1","v0.7.0","v.0.6.5","v0.6.4","v0.6.3","v0.6.2","v0.6.1","v0.5.0","v0.4.2","v0.4.1","v0.4","v0.3","v0.2","v0.1"],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2021-21330.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N"}]}