{"id":"USN-8379-1","summary":"python-urllib3 vulnerabilities","details":"It was discovered that urllib3 incorrectly handled cross-origin redirects\nin ProxyManager. A remote attacker could possibly use this issue to obtain\nsensitive information. (CVE-2026-44431)\n\nIt was discovered that urllib3 incorrectly handled decompression of\nspecially crafted responses. A remote attacker could possibly use this\nissue to cause urllib3 to consume resources, leading to a denial of\nservice. This issue only affected Ubuntu 26.04 LTS. (CVE-2026-44432)","modified":"2026-06-03T22:18:09.925568713Z","published":"2026-06-03T13:50:43Z","related":["UBUNTU-CVE-2026-44431","UBUNTU-CVE-2026-44432"],"upstream":["CVE-2026-44431","CVE-2026-44432","UBUNTU-CVE-2026-44431","UBUNTU-CVE-2026-44432"],"references":[{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-8379-1"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-44431"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-44432"}],"affected":[{"package":{"name":"python-urllib3","ecosystem":"Ubuntu:22.04:LTS","purl":"pkg:deb/ubuntu/python-urllib3?arch=source&distro=jammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.26.5-1~exp1ubuntu0.7"}]}],"versions":["1.26.5-1~exp1","1.26.5-1~exp1ubuntu0.1","1.26.5-1~exp1ubuntu0.2","1.26.5-1~exp1ubuntu0.3","1.26.5-1~exp1ubuntu0.4","1.26.5-1~exp1ubuntu0.5","1.26.5-1~exp1ubuntu0.6"],"ecosystem_specific":{"binaries":[{"binary_version":"1.26.5-1~exp1ubuntu0.7","binary_name":"python3-urllib3"}],"availability":"No subscription required"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8379-1.json","cves_map":{"cves":[{"severity":[{"score":"CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N","type":"CVSS_V4"},{"score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","type":"CVSS_V3"},{"score":"medium","type":"Ubuntu"}],"id":"CVE-2026-44431"}],"ecosystem":"Ubuntu:22.04:LTS"}}},{"package":{"name":"python-urllib3","ecosystem":"Ubuntu:24.04:LTS","purl":"pkg:deb/ubuntu/python-urllib3?arch=source&distro=noble"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.0.7-1ubuntu0.7"}]}],"versions":["1.26.16-1","1.26.18-1","2.0.7-1","2.0.7-1ubuntu0.1","2.0.7-1ubuntu0.2","2.0.7-1ubuntu0.3","2.0.7-1ubuntu0.4","2.0.7-1ubuntu0.5","2.0.7-1ubuntu0.6"],"ecosystem_specific":{"binaries":[{"binary_version":"2.0.7-1ubuntu0.7","binary_name":"python3-urllib3"}],"availability":"No subscription required"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8379-1.json","cves_map":{"cves":[{"severity":[{"score":"CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N","type":"CVSS_V4"},{"score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","type":"CVSS_V3"},{"score":"medium","type":"Ubuntu"}],"id":"CVE-2026-44431"}],"ecosystem":"Ubuntu:24.04:LTS"}}},{"package":{"name":"python-urllib3","ecosystem":"Ubuntu:25.10","purl":"pkg:deb/ubuntu/python-urllib3?arch=source&distro=questing"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.3.0-3ubuntu0.6"}]}],"versions":["2.3.0-2","2.3.0-2ubuntu1","2.3.0-3","2.3.0-3ubuntu0.1","2.3.0-3ubuntu0.2","2.3.0-3ubuntu0.3","2.3.0-3ubuntu0.4"],"ecosystem_specific":{"binaries":[{"binary_version":"2.3.0-3ubuntu0.6","binary_name":"python3-urllib3"}],"availability":"No subscription required"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8379-1.json","cves_map":{"cves":[{"id":"CVE-2026-44431","severity":[{"score":"CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N","type":"CVSS_V4"},{"score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","type":"CVSS_V3"},{"score":"medium","type":"Ubuntu"}]}],"ecosystem":"Ubuntu:25.10"}}},{"package":{"name":"python-urllib3","ecosystem":"Ubuntu:26.04:LTS","purl":"pkg:deb/ubuntu/python-urllib3?arch=source&distro=resolute"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.6.3-1ubuntu1.1"}]}],"versions":["2.3.0-3","2.5.0-1","2.5.0-1ubuntu1","2.5.0-1ubuntu2","2.6.3-1ubuntu1"],"ecosystem_specific":{"binaries":[{"binary_version":"2.6.3-1ubuntu1.1","binary_name":"python3-urllib3"}],"availability":"No subscription required"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8379-1.json","cves_map":{"cves":[{"severity":[{"score":"CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N","type":"CVSS_V4"},{"score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","type":"CVSS_V3"},{"score":"medium","type":"Ubuntu"}],"id":"CVE-2026-44431"},{"severity":[{"score":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H","type":"CVSS_V4"},{"score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","type":"CVSS_V3"},{"score":"medium","type":"Ubuntu"}],"id":"CVE-2026-44432"}],"ecosystem":"Ubuntu:26.04:LTS"}}}],"schema_version":"1.7.5"}