Back
CVE-2019-11236
In the urllib3 library through 1.24.1 for Python, CRLF injection is possible if the attacker controls the request parameter.
- 6.1MediumCVSS base score
- 2.1%Exploitation in 30 daysEPSS · top 18% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
In the urllib3 library through 1.24.1 for Python, CRLF injection is possible if the attacker controls the request parameter.
Timeline
Published
- 5 years later
· 5 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 3.0 | Medium6.1 | CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N |
- EPSS (exploitation in 30 days)
- 2.1% · top 18% of all CVEs (11 Nov 2026)
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 6.1.
Affected products
n/a
- affected n/a
Affected packages
From reviewed advisories of the GitHub Advisory Database.
- PyPIurllib3GHSA-r64q-w8jr-g9qp (opens in a new tab)
References
References15
- https://github.com/urllib3/urllib3/issues/1553 (opens in a new tab)x_transferred
- USN-3990-1 (opens in a new tab)vendor-advisoryx_transferred
- FEDORA-2019-20bc611b61 (opens in a new tab)vendor-advisoryx_transferred
- FEDORA-2019-fbda9f1e49 (opens in a new tab)vendor-advisoryx_transferred
- [debian-lts-announce] 20190620 [SECURITY] [DLA 1828-1] python-urllib3 security update (opens in a new tab)mailing-listx_transferred
- USN-3990-2 (opens in a new tab)vendor-advisoryx_transferred
- RHSA-2019:2272 (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)
- EUVD EUVD-2019-0152 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisory GHSA-r64q-w8jr-g9qp (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2019-11236)Record last updated .