6.1

CVE-2025-50182: urllib3 does not control redirects in browsers and Node.js

Modified
AliasesGHSA-48p4-8xcf-vxj5PYSEC-2026-1997UBUNTU-CVE-2025-50182
Published 19-06-2025Last modified 22-12-2025

Vulnerability summary

CVE-2025-50182 is a medium (CVSS 6.1) URL Redirection to Untrusted Site vulnerability in python urllib3. EPSS estimates a 0.60% chance of exploitation in the next 30 days, higher than 48.8% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 5.3, network access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
6.1/10
010
Medium · v3.1 (NVD)
EPSS score
0.60%
0%100%
Low · +0.21 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 2 · Related 27
OPENSUSE-SU-2025:15283-1USN-7599-1CGA-4286-5P72-CCC8CGA-448F-W8GJ-5F48CGA-48WJ-WV79-CX2QCGA-5662-R5JM-85PR

Timeline

  1. 19-06-2025
    PublishedVulnerability first disclosed.
  2. 22-12-2025
    Last modifiedVulnerability information updated.

Description

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.

CVSS metrics

7 scores · 7 sources · 1 version

EPSS trend

Probability

0.60%

Chance of exploitation in the next 30 days

Percentile

49%

Versus all other CVEs

30-day change

Increase +0.21 pp

From 0.39% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Version check

Known conditions: network-reachable, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.

Chainguard91 products
  • airflow-2< 2.11.0-r5
  • airflow-2-bitnami-compat< 2.11.0-r5
  • airflow-2-compat< 2.11.0-r5
  • airflow-2-iamguarded-compat< 2.11.0-r5
  • airflow-3< 3.0.2-r2
Wolfi67 products
  • airflow-3< 3.0.2-r2
  • airflow-3-bitnami-compat< 3.0.2-r2
  • airflow-3-compat< 3.0.2-r2
  • airflow-3-iamguarded-compat< 3.0.2-r2
  • az< 2.74.0-r3
Debian1 product
  • python-urllib3< 2.3.0-3
PyPI1 product
  • urllib3≥ 2.2.0, < 2.5.0
Python1 product
Ubuntu1 product
  • python-urllib3< 2.3.0-2ubuntu0.1
Urllib31 product

7 vendors · 163 products

References

12 links
Show all 12 references