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CVE-2019-11324
The urllib3 library before 1.24.2 for Python mishandles certain cases where the desired set of CA certificates is different from the OS…
High7.5EPSS 2.9%
- Published
- Updated
- Reserved
- Assigned by
- mitre
Description
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.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 3.0 | High7.5 | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N |
- EPSS (exploitation in 30 days)
- 2.9% · top 13% of all CVEs (7 Nov 2026)
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.5.
Weakness
Affected products
n/a
- affected n/a
Affected packages
From reviewed advisories of the GitHub Advisory Database.
- PyPIurllib3GHSA-mh33-7rrq-662w (opens in a new tab)
References (11)
- https://github.com/urllib3/urllib3/compare/a6ec68a...1efadf4 (opens in a new tab)x_transferred
- [oss-security] 20190418 Re: urllib3: adds system certificates to ssl_context (opens in a new tab)mailing-listx_transferred
- USN-3990-1 (opens in a new tab)vendor-advisoryx_transferred
- openSUSE-SU-2019:2131 (opens in a new tab)vendor-advisoryx_transferred
- openSUSE-SU-2019:2133 (opens in a new tab)vendor-advisoryx_transferred
- RHSA-2019:3590 (opens in a new tab)vendor-advisoryx_transferred
- RHSA-2019:3335 (opens in a new tab)vendor-advisoryx_transferred
- FEDORA-2020-6148c44137 (opens in a new tab)vendor-advisoryx_transferred
- FEDORA-2020-d0d9ad17d8 (opens in a new tab)vendor-advisoryx_transferred
- [debian-lts-announce] 20210615 [SECURITY] [DLA 2686-1] python-urllib3 security update (opens in a new tab)mailing-listx_transferred
- [debian-lts-announce] 20231008 [SECURITY] [DLA 3610-1] python-urllib3 security update (opens in a new tab)mailing-listx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisory GHSA-mh33-7rrq-662w (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
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[](https://trackcve.app/cve/CVE-2019-11324)Record last updated .