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Fencer Vulns
medium 5.3

CVE-2025-50182 json

urllib3 does not control redirects in browsers and Node.js

published 2025-06-18 16 mo ago modified 2026-09-10 1 mo ago also EUVD-2025-18677 , GHSA-48p4-8xcf-vxj5 , PYSEC-2026-1997

cvss
5.3
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.6%
EPSS 0.6% chance of exploitation in 30 days, percentile 49%
public exploits
0
none known

Summary

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.

Patch / fix

  • pypi urllib3 2.5.0
  • python urllib3 2.5.0
  • python-urllib3 Debian 14, Debian 13 2.3.0-3

debian advisories DEBIAN-CVE-2025-50182

  • python-urllib3 openSUSE Tumbleweed 2.5.0-1.1

opensuse advisories openSUSE-SU-2025:15283-1

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2025-50182 updated cvss 5.3

urllib3: urllib3 does not control redirects in browsers and Node.js

  • Red Hat Assisted Installer for Red Hat OpenShift Container Platform 2 rhai/assisted-installer-rhel9, rhai/assisted-installer-agent-rhel9, rhai/assisted-installer-controller-rhel9
    affected: workaround, no fix planned “Out of support scope”
  • Red Hat Builds for Red Hat OpenShift openshift-builds/openshift-builds-shared-resource-rhel9, openshift-builds/openshift-builds-shared-resource-webhook-rhel9 Red Hat cert-manager Operator for Red Hat OpenShift cert-manager/cert-manager-operator-rhel9, cert-manager/jetstack-cert-manager-rhel9, cert-manager/cert-manager-istio-csr-rhel9, cert-manager/jetstack-cert-manager-acmesolver-rhel9 Red Hat Confidential Compute Attestation confidential-compute-attestation-tech-preview/trustee-rhel9 Red Hat Custom Metric Autoscaler operator for Red Hat Openshift custom-metrics-autoscaler/custom-metrics-autoscaler-operator-bundle
    affected: workaround, no fix available “Fix deferred”
  • Red Hat Migration Toolkit for Virtualization mtv-candidate/mtv-api-rhel9, mtv-candidate/mtv-rhel9-operator, mtv-candidate/mtv-virt-v2v-rhel9, mtv-candidate/mtv-validation-rhel9, mtv-candidate/mtv-must-gather-rhel8, mtv-candidate/mtv-rhv-populator-rhel8, +5 more
    affected: workaround, no fix planned “Will not fix”
  • Red Hat Multiarch Tuning Operator multiarch-tuning/multiarch-tuning-rhel9-operator
    affected: workaround, no fix available “Fix deferred”
  • Red Hat Network Observability Operator network-observability/network-observability-cli-rhel9
    affected: workaround, no fix planned “Will not fix”
  • Red Hat OpenShift Lightspeed openshift-lightspeed/lightspeed-service-api-rhel9, openshift-lightspeed/lightspeed-console-plugin-rhel9
    affected: workaround, no fix available “Fix deferred”
  • Red Hat OpenShift Pipelines openshift-pipelines/pipelines-nop-rhel8, openshift-pipelines/pipelines-events-rhel8, openshift-pipelines/pipelines-hub-ui-rhel8, openshift-pipelines/pipelines-hub-ui-rhel9, openshift-pipelines/pipelines-cli-tkn-rhel8, openshift-pipelines/pipelines-hub-api-rhel8, +29 more
    affected: workaround, no fix available, no fix planned “Will not fix”
  • Red Hat OpenShift Serverless openshift-serverless-1/kn-eventing-istio-controller-rhel8 Red Hat OpenShift Service Mesh 3 openshift-service-mesh/istio-cni-rhel9, openshift-service-mesh/istio-pilot-rhel9, openshift-service-mesh/kiali-ossmc-rhel9, openshift-service-mesh/istio-proxyv2-rhel9, openshift-service-mesh/istio-rhel9-operator, openshift-service-mesh/kiali-rhel9-operator, +3 more Red Hat AI Inference Server rhaiis/vllm-cuda-rhel9, rhaiis/vllm-rocm-rhel9
    affected: workaround, no fix available “Fix deferred”
show 12 more
  • Red Hat Ansible Automation Platform 2 automation-controller, ee-dellemc-openmanage-container, aap-cloud-metrics-collector-container, ansible-automation-platform-24/de-minimal-rhel8, ansible-automation-platform-24/de-minimal-rhel9, ansible-automation-platform-24/lightspeed-rhel8, +11 more
    affected: workaround, no fix available, no fix planned “Will not fix”
  • Red Hat Ceph Storage 6 grafana Red Hat Ceph Storage 7 grafana Red Hat Ceph Storage 8 grafana Red Hat Ceph Storage 9 grafana
    affected: workaround, no fix available
  • Red Hat Developer Hub 1 rhdh/rhdh-hub-rhel9, rhdh/rhdh-rhel9-operator
    affected: workaround, no fix available, no fix planned “Will not fix”
  • Red Hat Discovery 1 discovery/discovery-server-rhel9 Red Hat Edge Manager preview rhem/flightctl-ui-rhel9, rhem/flightctl-api-rhel9, rhem/flightctl-ui-ocp-rhel9, rhem/flightctl-worker-rhel9, rhem/flightctl-periodic-rhel9, rhem/flightctl-cli-artifacts-rhel9 Red Hat Enterprise Linux 7 python-pip, python3-pip, resource-agents, python-s3transfer, resource-agents-gcp, resource-agents-sap, +4 more Red Hat Enterprise Linux 8 python-pip, python3-pip, fence-agents, python3.11-pip, python3.12-pip, fence-agents-all, +51 more Red Hat Enterprise Linux 9 fence-virt, python-pip, fence-virtd, python3-pip, fence-agents, python3.11-pip, +60 more Red Hat Enterprise Linux 10 python-pip
    affected: workaround, no fix available “Fix deferred”
  • Red Hat Enterprise Linux AI (RHEL AI) rhelai1/ui-rhel9, rhelai1/gemma-2-9b-it, rhelai1/bootc-amd-rhel9, rhelai1/bootc-intel-rhel9, rhelai1/gemma-2-9b-it-fp8, rhelai1/granite-8b-lab-v1, +47 more
    affected: workaround, no fix available, no fix planned “Will not fix”
  • Red Hat Offline Knowledge Portal offline-knowledge-portal/rhokp-rhel9 Red Hat OpenShift AI (RHOAI) rhoai/odh-dashboard-rhel8, rhoai/odh-feast-operator-rhel8, rhoai/odh-feature-server-rhel8, rhoai/odh-model-registry-rhel8, rhoai/odh-trustyai-service-rhel8, rhoai/odh-notebook-controller-rhel8, +4 more Red Hat OpenShift Container Platform 4 openshift4/ose-ansible-operator, openshift4/microshift-bootc-rhel9, openshift4/ose-olm-catalogd-rhel8, openshift4/ose-olm-catalogd-rhel9, openshift4/ztp-site-generate-rhel8, openshift4/ose-ansible-rhel9-operator, +2 more Red Hat Quay 3 quay/quay-rhel8 Red Hat Satellite 6 satellite/iop-advisor-engine-rhel9
    affected: workaround, no fix available “Fix deferred”
  • Red Hat Trusted Artifact Signer rhtas/tuffer-rhel9, rhtas/tuftool-rhel9, rhtas/rekor-cli-rhel9, rhtas/rekor-server-rhel9, rhtas/client-server-rhel9, rhtas/trillian-redis-rhel9, +4 more
    affected: workaround, no fix planned “Will not fix”
  • Red Hat Ceph Storage 7.1 rhceph/grafana-rhel9 1791450715
    fixed: vendor fix RHSA-2026:83548
  • Red Hat Ceph Storage 8.1 rhceph/grafana-rhel9 1787305054
    fixed: vendor fix RHSA-2026:62115
  • Red Hat Ceph Storage 9 rhceph 1771399331
    fixed: vendor fix RHSA-2026:3406
  • Red Hat Ceph Storage 9.2 rhceph/rhceph-9-rhel10 1790843527
    fixed: vendor fix RHSA-2026:86618
  • Red Hat build of Quarkus Native builder mandrel-for-jdk-21-rhel8 Red Hat Ceph Storage 7.1 rhceph/rhceph-7-rhel9 1791452477, rhceph/keepalived-rhel9 1791453133, rhceph/snmp-notifier-rhel9 1791450035, rhceph/rhceph-haproxy-rhel9 1791452229, rhceph/rhceph-promtail-rhel9 1791451373 Red Hat Ceph Storage 8.1 rhceph/rhceph-8-rhel9 1787550654, rhceph/keepalived-rhel9 1787303659, rhceph/oauth2-proxy-rhel9 1787304106, rhceph/snmp-notifier-rhel9 1787303640, rhceph/rhceph-haproxy-rhel9 1787304199, rhceph/rhceph-promtail-rhel9 1787304137 Red Hat Ceph Storage 9 rhceph 1771398877, rhceph 1771399022, rhceph 1771399060, rhceph 1771399158, rhceph 1771816028
    not affected: vulnerable code not present

4 more not affected in the full advisory

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
16 mo ago

Exploit prediction

0.60% chance of exploitation in the next 30 days, higher than 49% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 5.3 CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N
GitHub 3.1 5.3 CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N
NVD 3.1 6.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
OSV 3.1 5.3 CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N

Affected packages

ecosystem package affected fixed in
pypi urllib3
>=2.2.0, <2.5.0
2.5.0

Affected products

  • urllib3 urllib3

Classification

Weakness
  • CWE-601 URL Redirection to Untrusted Site

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.