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Python EUVD-2025-18677

| CVE-2025-50182 MEDIUM
URL Redirection to Untrusted Site (Open Redirect) (CWE-601)
2025-06-19 security-advisories@github.com GHSA-48p4-8xcf-vxj5
Python Node.js Open Redirect Ubuntu Debian Urllib3 Red Hat Suse
5.3
CVSS 3.1 · GitHub Advisory
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Severity by source

GitHub Advisory PRIMARY
5.3 MEDIUM
AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N
Ubuntu
MEDIUM
qualitative
SUSE
MEDIUM
qualitative
Red Hat
5.3 MEDIUM
qualitative

Primary rating from GitHub Advisory.

CVSS VectorGitHub Advisory

CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N
Attack Vector
Network
Attack Complexity
High
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None

Lifecycle Timeline

4
EUVD ID Assigned
Mar 15, 2026 - 00:08 euvd
EUVD-2025-18677
Analysis Generated
Mar 15, 2026 - 00:08 vuln.today
Patch released
Mar 15, 2026 - 00:08 nvd
Patch available
CVE Published
Jun 19, 2025 - 02:15 nvd
MEDIUM 5.3

Blast Radius

ecosystem impact
† from your stack dependencies † transitive graph · vuln.today resolves 4-path depth
  • 54 pypi packages depend on urllib3 (52 direct, 2 indirect)

Ecosystem-wide dependent count for version 2.2.0.

DescriptionGitHub Advisory

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.

Analysis

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.

Technical ContextAI

An open redirect vulnerability allows attackers to redirect users from a trusted domain to an arbitrary external URL through manipulation of redirect parameters. This vulnerability is classified as URL Redirection to Untrusted Site (Open Redirect) (CWE-601).

RemediationAI

A vendor patch is available — apply it immediately. Validate redirect URLs against a whitelist of allowed destinations. Use relative URLs for redirects. Warn users before redirecting to external sites.

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Vendor StatusVendor

Ubuntu

Priority: Medium
python-pip
Release Status Version
upstream needs-triage -
plucky not-affected code not present
bionic not-affected code not present
focal not-affected code not present
jammy not-affected code not present
noble not-affected code not present
oracular not-affected code not present
trusty not-affected code not present
xenial not-affected code not present
python-urllib3
Release Status Version
plucky released 2.3.0-2ubuntu0.1
bionic not-affected code not present
focal not-affected code not present
jammy not-affected code not present
noble not-affected code not present
oracular not-affected code not present
trusty not-affected code not present
upstream released 2.5.0
xenial not-affected code not present
USN-7599-1

Debian

Bug #1108077
python-urllib3
Release Status Fixed Version Urgency
bullseye not-affected - -
bullseye (security) fixed 1.26.5-1~exp1+deb11u3 -
bookworm not-affected - -
bookworm (security) fixed 1.26.12-1+deb12u3 -
trixie (security), trixie fixed 2.3.0-3+deb13u1 -
forky, sid fixed 2.6.3-1 -
(unstable) fixed 2.3.0-3 -

SUSE

Severity: Medium
Product Status
SUSE Linux Enterprise Server 16.0 Fixed
openSUSE Tumbleweed Fixed
SUSE Linux Enterprise Desktop 15 SP7 Fixed
SUSE Linux Enterprise High Performance Computing 12 Fixed
SUSE Linux Enterprise High Performance Computing 15 SP7 Fixed

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EUVD-2025-18677 vulnerability details – vuln.today
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