Read the docs
TI-2019-08458 Aliases CVE-2019-11324GHSA-mh33-7rrq-662w

The urllib3 library before 1.24.2 for Python mishandles certain cases where the desired…

Priority LOW 38CWE-295Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Spoofing
Confidentiality · integrity · availability
None · High · None
Fix status
Partial Red Hat: 9 fixed, 10 without a fix

Attack profile from CVSS 3.0 · NVD. Fix status from CNA, GitHub and Red Hat. Impact type from CWE-295.

Summary

The urllib3 library before 1.24.2 for Python mishandles certain cases where the desired set of CA certificates is different from the OS store of CA certificates, which results in SSL connections succeeding in situations where a verification failure is the correct outcome. This is related to use of the ssl_context, ca_certs, or ca_certs_dir argument.

Why it matters now

EPSS 0.02915 87th percentileScored 2026-11-07
Fix Partial urllib3 (PyPI): 1.24.2Red Hat: 6 advisoriesRed Hat: 9 fixed, 10 without a fix

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
—urllib3 (PyPI)before 1.24.21.24.2Patch availableGHSA-mh33-7rrq-662w
  • — Vendor— Affected all versions Fixed in — No fix listed CNA
  • urllib3 (PyPI) Vendor— Affected before 1.24.2 Fixed in 1.24.2 Patch available GHSA-mh33-7rrq-662w

CPE configurations NVD · 5

CPEVersionsRoleVendor
cpe:2.3:a:python:urllib3:*:*:*:*:*:*:*:*before 1.24.2Vulnerablepython-pillow
cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*16.04VulnerableCanonical
cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*18.04VulnerableCanonical
cpe:2.3:o:canonical:ubuntu_linux:18.10:*:*:*:*:*:*:*18.10VulnerableCanonical
cpe:2.3:o:canonical:ubuntu_linux:19.04:*:*:*:*:*:*:*19.04VulnerableCanonical
  • cpe:2.3:a:python:urllib3:*:*:*:*:*:*:*:* Versions before 1.24.2 Vulnerable ·python-pillow
  • cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:* Versions 16.04 Vulnerable ·Canonical
  • cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:* Versions 18.04 Vulnerable ·Canonical
  • cpe:2.3:o:canonical:ubuntu_linux:18.10:*:*:*:*:*:*:* Versions 18.10 Vulnerable ·Canonical
  • cpe:2.3:o:canonical:ubuntu_linux:19.04:*:*:*:*:*:*:* Versions 19.04 Vulnerable ·Canonical

Remediation

  • Fix · GHSA-mh33-7rrq-662w urllib3 (PyPI) Fixed in 1.24.2 Advisory →

Red Hat 6 advisories

  • RHSA-2020:2068 Released 2020-05-12 · Red Hat rating Moderate
    python-pip security update
    • Red Hat Enterprise Linux Client (v. 7) python-pip-9.0.3-7.el7_8, python3-pip-9.0.3-7.el7_8
    • Red Hat Enterprise Linux ComputeNode (v. 7) python-pip-9.0.3-7.el7_8, python3-pip-9.0.3-7.el7_8
    • Red Hat Enterprise Linux Server (v. 7) python-pip-9.0.3-7.el7_8, python3-pip-9.0.3-7.el7_8
    • Red Hat Enterprise Linux Workstation (v. 7) python-pip-9.0.3-7.el7_8, python3-pip-9.0.3-7.el7_8
  • RHSA-2020:1605 Released 2020-04-28 · Red Hat rating Moderate
    python27:2.7 security, bug fix, and enhancement update
    • Red Hat Enterprise Linux AppStream (v. 8) Cython-0.28.1-7.module+el8.1.0+3111+de3f2d8e.src::python27:2.7, PyYAML-3.12-16.module+el8.1.0+3111+de3f2d8e.src::python27:2.7, babel-2.5.1-9.module+el8.1.0+3111+de3f2d8e.noarch::python27:2.7 +47
  • RHSA-2020:1916 Released 2020-04-28 · Red Hat rating Moderate
    python-pip security update
    • Red Hat Enterprise Linux AppStream (v. 8) python3-pip-9.0.3-16.el8
    • Red Hat Enterprise Linux BaseOS (v. 8) platform-python-pip-9.0.3-16.el8, python-pip-9.0.3-16.el8, python3-pip-wheel-9.0.3-16.el8
Show 3 more Red Hat advisories
  • RHSA-2020:0850 Released 2020-03-17 · Red Hat rating Moderate
    python-pip security update
    • Red Hat Enterprise Linux Client (v. 7) python-pip-9.0.3-7.el7_7, python3-pip-9.0.3-7.el7_7
    • Red Hat Enterprise Linux ComputeNode (v. 7) python-pip-9.0.3-7.el7_7, python3-pip-9.0.3-7.el7_7
    • Red Hat Enterprise Linux Server (v. 7) python-pip-9.0.3-7.el7_7, python3-pip-9.0.3-7.el7_7
    • Red Hat Enterprise Linux Workstation (v. 7) python-pip-9.0.3-7.el7_7, python3-pip-9.0.3-7.el7_7
  • RHSA-2019:3590 Released 2019-11-05 · Red Hat rating Moderate
    python-urllib3 security update
    • Red Hat Enterprise Linux BaseOS (v. 8) python-urllib3-1.24.2-2.el8, python3-urllib3-1.24.2-2.el8
  • RHSA-2019:3335 Released 2019-11-05 · Red Hat rating Moderate
    python27:2.7 security and bug fix update
    • Red Hat Enterprise Linux AppStream (v. 8) Cython-0.28.1-7.module+el8.1.0+3111+de3f2d8e.src::python27:2.7, PyYAML-3.12-16.module+el8.1.0+3111+de3f2d8e.src::python27:2.7, babel-2.5.1-9.module+el8.1.0+3111+de3f2d8e.noarch::python27:2.7 +47

Vendor assessments

Red Hat

Red Hat rating: Moderate. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat OpenShift Container Platform 3.10AffectedNo fix planned: Out of support scope
Red Hat OpenShift Container Platform 3.11AffectedNo fix planned: Will not fix
Red Hat OpenShift Container Platform 3.6AffectedNo fix planned: Out of support scope
Red Hat OpenShift Container Platform 3.7AffectedNo fix planned: Out of support scope
Red Hat OpenShift Container Platform 3.9AffectedNo fix planned: Out of support scope
Red Hat OpenStack Platform 13 (Queens)AffectedNo fix planned: Will not fix
Red Hat OpenStack Platform 14 (Rocky)AffectedNo fix yet
Red Hat OpenStack Platform 15 (Stein)AffectedNo fix yet
Red Hat Satellite 6AffectedNo fix planned: Out of support scope
Red Hat Storage 3AffectedNo fix planned: Will not fix
Red Hat Enterprise Linux AppStream (v. 8)Fixed RHSA-2019:3335, RHSA-2020:1605, RHSA-2020:1916
Red Hat Enterprise Linux BaseOS (v. 8)Fixed RHSA-2019:3590, RHSA-2020:1916
Red Hat Enterprise Linux Client (v. 7)Fixed RHSA-2020:0850, RHSA-2020:2068
Red Hat Enterprise Linux ComputeNode (v. 7)Fixed RHSA-2020:0850, RHSA-2020:2068
Red Hat Enterprise Linux Server (v. 7)Fixed RHSA-2020:0850, RHSA-2020:2068
Red Hat Enterprise Linux Workstation (v. 7)Fixed RHSA-2020:0850, RHSA-2020:2068
Red Hat OpenShift Container Platform 4.3Fixed—
Red Hat OpenShift Container Platform 4.4Fixed—
Red Hat OpenShift Container Platform 4.6Fixed—
Not affected: 8 products
  • Red Hat Enterprise Linux 6
  • Red Hat Enterprise Linux 7
  • Red Hat Enterprise Linux 8
  • Red Hat OpenShift Container Platform 4.3
  • Red Hat OpenShift Container Platform 4.4
  • Red Hat OpenStack Platform 10 (Newton)
  • Red Hat OpenStack Platform 9 (Mitaka)
  • Red Hat Software Collections

Timeline

  1. 2026-10-02 Threatist record created from CVE-2019-11324
  2. 2026-10-03 Alias added: GHSA-mh33-7rrq-662w
  3. 2026-10-30 Fix available: Red Hat OpenShift Container Platform 4.6 · Red Hat

References

Patch 1

Advisory 10

Other 9

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences