{"id":"UBUNTU-CVE-2023-43804","details":"urllib3 is a user-friendly HTTP client library for Python. urllib3 doesn't treat the `Cookie` HTTP header special or provide any helpers for managing cookies over HTTP, that is the responsibility of the user. However, it is possible for a user to specify a `Cookie` header and unknowingly leak information via HTTP redirects to a different origin if that user doesn't disable redirects explicitly. This issue has been patched in urllib3 version 1.26.17 or 2.0.5.","modified":"2026-02-04T03:40:42.181006Z","published":"2023-10-04T17:15:00Z","related":["USN-6473-1","USN-6473-2"],"upstream":["CVE-2023-43804"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2023-43804"},{"type":"REPORT","url":"https://github.com/urllib3/urllib3/security/advisories/GHSA-v845-jxx5-vc9f"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-6473-1"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-6473-2"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2023-43804"}],"affected":[{"package":{"name":"python-pip","ecosystem":"Ubuntu:Pro:14.04:LTS","purl":"pkg:deb/ubuntu/python-pip@1.5.4-1ubuntu4+esm5?arch=source&distro=esm-infra-legacy/trusty"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.4.1-2","1.5.4-1","1.5.4-1ubuntu1","1.5.4-1ubuntu3","1.5.4-1ubuntu4","1.5.4-1ubuntu4+esm1","1.5.4-1ubuntu4+esm2","1.5.4-1ubuntu4+esm3","1.5.4-1ubuntu4+esm4","1.5.4-1ubuntu4+esm5"],"ecosystem_specific":{"binaries":[{"binary_name":"python-pip","binary_version":"1.5.4-1ubuntu4+esm5"},{"binary_name":"python-pip-whl","binary_version":"1.5.4-1ubuntu4+esm5"},{"binary_name":"python3-pip","binary_version":"1.5.4-1ubuntu4+esm5"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2023/UBUNTU-CVE-2023-43804.json"}},{"package":{"name":"python-urllib3","ecosystem":"Ubuntu:Pro:14.04:LTS","purl":"pkg:deb/ubuntu/python-urllib3@1.7.1-1ubuntu4.1+esm1?arch=source&distro=esm-infra-legacy/trusty"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.6-2","1.7.1-1","1.7.1-1build1","1.7.1-1ubuntu0.1","1.7.1-1ubuntu3","1.7.1-1ubuntu4","1.7.1-1ubuntu4.1","1.7.1-1ubuntu4.1+esm1"],"ecosystem_specific":{"binaries":[{"binary_name":"python-urllib3","binary_version":"1.7.1-1ubuntu4.1+esm1"},{"binary_name":"python-urllib3-whl","binary_version":"1.7.1-1ubuntu4.1+esm1"},{"binary_name":"python3-urllib3","binary_version":"1.7.1-1ubuntu4.1+esm1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2023/UBUNTU-CVE-2023-43804.json"}},{"package":{"name":"python-urllib3","ecosystem":"Ubuntu:Pro:16.04:LTS","purl":"pkg:deb/ubuntu/python-urllib3@1.13.1-2ubuntu0.16.04.4+esm1?arch=source&distro=esm-infra/xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.13.1-2ubuntu0.16.04.4+esm1"}]}],"versions":["1.11-1","1.12-1","1.13.1-1","1.13.1-2","1.13.1-2ubuntu0.16.04.1","1.13.1-2ubuntu0.16.04.2","1.13.1-2ubuntu0.16.04.3","1.13.1-2ubuntu0.16.04.4"],"ecosystem_specific":{"availability":"Available 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