CVE-2025-50182

EUVD-2025-18677
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 Pyodide runtime utilizing the JavaScript Fetch API or falling back on XMLHttpRequest. This means Python libraries can be used to make HTTP requests from a browser or Node.js. Additionally, urllib3 provides a mechanism to control redirects, but the retries and redirect parameters are ignored with Pyodide; the runtime itself determines redirect behavior. This issue has been patched in version 2.5.0.
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ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
5.3 MEDIUM
NETWORK
HIGH
LOW
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N
Base Score
CVSS 3.x
EPSS Score
Percentile: 27.68%
Affected Products (NVD)
VendorProductVersion
pythonurllib3
2.2.0 ≤
𝑥
< 2.5.0
𝑥
= Vulnerable software versions
Debian logo
Debian Releases
Debian Product
Codename
python-urllib3
bookworm
1.26.12-1+deb12u4
fixed
bookworm (security)
1.26.12-1+deb12u4
fixed
bullseye
1.26.5-1~exp1
fixed
bullseye (security)
1.26.5-1~exp1+deb11u4
fixed
forky
2.7.0-3
fixed
sid
2.7.0-3
fixed
trixie
2.3.0-3+deb13u2
fixed
trixie (security)
2.3.0-3+deb13u2
fixed
Ubuntu logo
Ubuntu Releases
Ubuntu Product
Codename
python-pip
bionic
not-affected
focal
not-affected
jammy
not-affected
noble
not-affected
oracular
not-affected
plucky
not-affected
trusty
not-affected
xenial
not-affected
python-urllib3
bionic
not-affected
focal
not-affected
jammy
not-affected
noble
not-affected
oracular
not-affected
plucky
Fixed 2.3.0-2ubuntu0.1
released
trusty
not-affected
xenial
not-affected