Package impact

python PyPI / urllib3

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CVE Severity CVSS Risk Flags OS Vendor Published Description
CVE-2025-66418 high 8.0 4mo ago RHSA-2026:1254: python-urllib3 security update (Important)
CVE-2026-21441 high 8.0 5mo ago RHSA-2026:1254: python-urllib3 security update (Important)
CVE-2025-66471 high 8.0 6mo ago RHSA-2026:1254: python-urllib3 security update (Important)
CVE-2021-28363 high 8.0 5y ago The urllib3 library 1.26.x before 1.26.4 for Python omits SSL certificate validation in some cases involving HTTPS to HTTPS proxies. The initial connection to the HTTPS proxy (if an SSLContext isn't …
CVE-2026-44432 high 7.5 7.5 22d ago urllib3 is an HTTP client library for Python. From 2.6.0 to before 2.7.0, urllib3 could decompress the whole response instead of the requested portion (1) during the second HTTPResponse.read(amt=N) c…
CVE-2024-37891 medium 5.5 2y ago RHSA-2024:8843: python3.11-urllib3 security update (Moderate)
CVE-2023-45803 medium 5.5 2y ago RHSA-2024:2988: container-tools:rhel8 security update (Moderate)
CVE-2023-43804 medium 5.5 3y ago RHSA-2024:2987: python27:2.7 security update (Moderate)
CVE-2018-25091 medium 5.5 3y ago RHSA-2024:2988: container-tools:rhel8 security update (Moderate)
CVE-2019-11236 medium 5.5 4y ago RHSA-2020:1916: python-pip security update (Moderate)
CVE-2020-26137 medium 5.5 5y ago RHSA-2021:1761: python27:2.7 security and bug fix update (Moderate)
CVE-2021-33503 medium 5.5 5y ago RHSA-2021:4162: python38:3.8 and python38-devel:3.8 security update (Moderate)
CVE-2019-11324 medium 5.5 7y ago RHSA-2020:1916: python-pip security update (Moderate)
CVE-2018-20060 medium 5.5 8y ago RHSA-2020:1916: python-pip security update (Moderate)
CVE-2026-44431 medium 5.3 5.3 22d ago urllib3 is an HTTP client library for Python. From 1.23 to before 2.7.0, cross-origin redirects followed from the low-level API via ProxyManager.connection_from_url().urlopen(..., assert_same_host=Fa…
CVE-2016-9015 low 3.7 3.7 10y ago Versions 1.17 and 1.18 of the Python urllib3 library suffer from a vulnerability that can cause them, in certain configurations, to not correctly validate TLS certificates. This places users of the l…
CVE-2025-50182 unknown 1y ago urllib3 is a user-friendly HTTP client library for Python. Starting in version 2.2.0 and prior to 2.5.0, urllib3 does not control redirects in browsers and Node.js. urllib3 supports being used in a P…
CVE-2025-50181 unknown 1y ago urllib3 redirects are not disabled when retries are disabled on PoolManager instantiation
CVE-2020-7212 unknown 5y ago The _encode_invalid_chars function in util/url.py in the urllib3 library 1.25.2 through 1.25.7 for Python allows a denial of service (CPU consumption) because of an inefficient algorithm. The percent…