CVE catalog

CVE-2019-11236

python-urllib3: CVE-2019-11236

Severity: Medium · CVSS 6.5CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
Published: Mar 13, 2019, 12:00:00 AM UTC
Source: [NVD] · [CVE record]
EPSS: 2.07% · Oct 25, 2026

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

Vulnerable and fixed packages

Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.

Distribution	Package	Release	Version	Status
Debian	python-urllib3	sid	`2.8.0-2`	fixed
Debian	python-urllib3	forky	`2.8.0-2`	fixed
Debian	python-urllib3	trixie	`2.3.0-3+deb13u2`	fixed
Debian	python-urllib3	trixie-security	`2.3.0-3+deb13u2`	fixed
Debian	python-urllib3	bookworm	`1.26.12-1+deb12u4`	fixed
Debian	python-urllib3	bookworm-security	`1.26.12-1+deb12u4`	fixed
Ubuntu	python-urllib3	pro	`1.6-2`	vulnerable
Ubuntu	python-urllib3	pro	`1.7.1-1`	vulnerable
Ubuntu	python-urllib3	pro	`1.7.1-1build1`	vulnerable
Ubuntu	python-urllib3	pro	`1.7.1-1ubuntu0.1`	vulnerable
Ubuntu	python-urllib3	pro	`1.7.1-1ubuntu3`	vulnerable
Ubuntu	python-urllib3	pro	`1.7.1-1ubuntu4`	vulnerable
Ubuntu	python-urllib3	pro	`1.7.1-1ubuntu4.1`	vulnerable
Ubuntu	python-urllib3	pro	`1.7.1-1ubuntu4.1+esm1`	fixed
Ubuntu	python-urllib3	pro	`1.6-2`	vulnerable
Ubuntu	python-urllib3	pro	`1.7.1-1`	vulnerable
Ubuntu	python-urllib3	pro	`1.7.1-1build1`	vulnerable
Ubuntu	python-urllib3	pro	`1.7.1-1ubuntu0.1`	vulnerable
Ubuntu	python-urllib3	pro	`1.7.1-1ubuntu3`	vulnerable
Ubuntu	python-urllib3	pro	`1.7.1-1ubuntu4`	vulnerable
Ubuntu	python-urllib3	pro	`1.7.1-1ubuntu4.1`	vulnerable
Ubuntu	python-urllib3	pro	`1.7.1-1ubuntu4.1+esm1`	fixed
Ubuntu	python-urllib3	16.04	`1.11-1`	vulnerable
Ubuntu	python-urllib3	16.04	`1.12-1`	vulnerable
Ubuntu	python-urllib3	16.04	`1.13.1-1`	vulnerable
Ubuntu	python-urllib3	16.04	`1.13.1-2`	vulnerable
Ubuntu	python-urllib3	16.04	`1.13.1-2ubuntu0.16.04.1`	vulnerable
Ubuntu	python-urllib3	16.04	`1.13.1-2ubuntu0.16.04.2`	vulnerable
Ubuntu	python-urllib3	16.04	`1.13.1-2ubuntu0.16.04.3`	fixed
Ubuntu	python-urllib3	18.04	`1.21.1-1`	vulnerable
Ubuntu	python-urllib3	18.04	`1.22-1`	vulnerable
Ubuntu	python-urllib3	18.04	`1.22-1ubuntu0.18.04.1`	fixed
Suse	python-urllib3	linux enterprise module for basesystem 15 sp1	`1.24-9.4.1`	fixed
Suse	python-urllib3	linux enterprise module for python 2 15 sp1	`1.24-9.4.1`	fixed
Opensuse	python-urllib3	leap 15.1	`1.24-lp151.2.3.1`	fixed
Opensuse	python-urllib3-test	leap 15.1	`1.24-lp151.2.3.1`	fixed
Suse	python-urllib3	openstack cloud 9	`1.23-3.6.1`	fixed
Suse	python-urllib3	openstack cloud crowbar 9	`1.23-3.6.1`	fixed

Fixed-version evidence

Distribution	Package	Type	Release	Fixed version	Urgency	Origin	Bugs
Debian	python-urllib3	source	sid	`1.25.6-4`	not yet assigned	Not reported	[927172]
Debian	python-urllib3	source	forky	`1.25.6-4`	not yet assigned	Not reported	[927172]
Debian	python-urllib3	source	trixie	`1.25.6-4`	not yet assigned	Not reported	[927172]
Debian	python-urllib3	source	bookworm	`1.25.6-4`	not yet assigned	Not reported	[927172]
Ubuntu	python-urllib3	deb	pro	`1.7.1-1ubuntu4.1+esm1`	Not reported	USN-3990-2	Not reported
Ubuntu	python-urllib3	deb	pro	`1.7.1-1ubuntu4.1+esm1`	Not reported	UBUNTU-CVE-2019-11236	Not reported
Ubuntu	python-urllib3	deb	16.04	`1.13.1-2ubuntu0.16.04.3`	Not reported	UBUNTU-CVE-2019-11236	Not reported
Ubuntu	python-urllib3	deb	18.04	`1.22-1ubuntu0.18.04.1`	Not reported	UBUNTU-CVE-2019-11236	Not reported
Suse	python-urllib3	rpm	linux enterprise module for basesystem 15 sp1	`1.24-9.4.1`	Not reported	SUSE-SU-2019:2332-1	Not reported
Suse	python-urllib3	rpm	linux enterprise module for python 2 15 sp1	`1.24-9.4.1`	Not reported	SUSE-SU-2019:2332-1	Not reported
Opensuse	python-urllib3	rpm	leap 15.1	`1.24-lp151.2.3.1`	Not reported	OPENSUSE-SU-2019:2133-1	Not reported
Opensuse	python-urllib3-test	rpm	leap 15.1	`1.24-lp151.2.3.1`	Not reported	OPENSUSE-SU-2019:2133-1	Not reported
Suse	python-urllib3	rpm	openstack cloud 9	`1.23-3.6.1`	Not reported	SUSE-SU-2019:2391-1	Not reported
Suse	python-urllib3	rpm	openstack cloud crowbar 9	`1.23-3.6.1`	Not reported	SUSE-SU-2019:2391-1	Not reported

[Debian bug #927172]

OpenFactory catalog packages

Matching against OpenFactory catalog package versions is in progress.

[Debian 12 (Bookworm)]

[python3-urllib3]Unknown
Source package: [python-urllib3]
Details (4)
- 1.26.12-1+deb12u4 · all · bookworm
  Fixed · Fixed: 1.25.6-4
  dsa · python-urllib3 · debian · bookworm; dsa · python-urllib3 · debian · 12
- 1.26.12-1+deb12u4 · all · bookworm
  Fixed · Fixed: 1.25.6-4
  dsa · python-urllib3 · debian · bookworm; dsa · python-urllib3 · debian · 12
- 1.26.12-1+deb12u4 · all · bookworm-security
  Fixed · Fixed: 1.25.6-4
  dsa · python-urllib3 · debian · bookworm; dsa · python-urllib3 · debian · 12
- 1.26.12-1+deb12u4 · all · bookworm-security
  Fixed · Fixed: 1.25.6-4
  dsa · python-urllib3 · debian · bookworm; dsa · python-urllib3 · debian · 12

[Debian 13 (Trixie)]

[python3-urllib3]Unknown
Source package: [python-urllib3]
Details (4)
- 2.3.0-3+deb13u2 · all · trixie
  Fixed · Fixed: 1.25.6-4
  dsa · python-urllib3 · debian · 13
- 2.3.0-3+deb13u2 · all · trixie
  Fixed · Fixed: 1.25.6-4
  dsa · python-urllib3 · debian · 13
- 2.3.0-3+deb13u2 · all · trixie-security
  Fixed · Fixed: 1.25.6-4
  dsa · python-urllib3 · debian · 13
- 2.3.0-3+deb13u2 · all · trixie-security
  Fixed · Fixed: 1.25.6-4
  dsa · python-urllib3 · debian · 13

Observed: Oct 23, 2026, 5:38:39 PM UTC

References

[CERT-Bund public advisories] · [Debian Security Tracker] · [FIRST EPSS] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX] · [SUSE security advisories and VEX]