What’s Vulnerable › Vulnerabilities

CVE-2019-11236

• Severity: medium (CVSS 6.1 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 2.1% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2019-04-15 · updated 2026-06-17
• Weakness: CWE-93

Description

In the urllib3 library through 1.24.1 for Python, CRLF injection is possible if the attacker controls the request parameter.

Affected products

• urllib3: through 1.24.2

References

• http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00039.html
• http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00041.html
• https://access.redhat.com/errata/RHSA-2019:2272
• https://access.redhat.com/errata/RHSA-2019:3335
• https://access.redhat.com/errata/RHSA-2019:3590
• https://github.com/urllib3/urllib3/issues/1553
• https://lists.debian.org/debian-lts-announce/2019/06/msg00016.html
• https://lists.debian.org/debian-lts-announce/2021/06/msg00015.html
• https://lists.debian.org/debian-lts-announce/2023/10/msg00012.html
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NKGPJLVLVYCL4L4B4G5TIOTVK4BKPG72/
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/R62XGEYPUTXMRHGX5I37EBCGQ5COHGKR/
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TBI45HO533KYHNB5YRO43TBYKA3E3VRL/

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