{"id":"SUSE-SU-2026:0635-1","summary":"Security update for python-urllib3_1","details":"This update for python-urllib3_1 fixes the following issues:\n\n- CVE-2025-66471: excessive resource consumption via decompression of highly compressed data in Streaming API (bsc#1254867).\n- CVE-2025-66418: resource exhaustion via unbounded number of links in the decompression chain (bsc#1254866).\n- CVE-2026-21441: excessive resource consumption during decompression of data in HTTP redirect responses (bsc#1256331).\n","modified":"2026-03-11T07:31:39.773507Z","published":"2026-02-25T11:12:53Z","related":["CVE-2025-66418","CVE-2025-66471","CVE-2026-21441"],"upstream":["CVE-2025-66418","CVE-2025-66471","CVE-2026-21441"],"references":[{"type":"ADVISORY","url":"https://www.suse.com/support/update/announcement/2026/suse-su-20260635-1/"},{"type":"REPORT","url":"https://bugzilla.suse.com/1254866"},{"type":"REPORT","url":"https://bugzilla.suse.com/1254867"},{"type":"REPORT","url":"https://bugzilla.suse.com/1256331"},{"type":"WEB","url":"https://www.suse.com/security/cve/CVE-2025-66418"},{"type":"WEB","url":"https://www.suse.com/security/cve/CVE-2025-66471"},{"type":"WEB","url":"https://www.suse.com/security/cve/CVE-2026-21441"}],"affected":[{"package":{"name":"python-urllib3_1","ecosystem":"SUSE:Linux Enterprise Module for Python 3 15 SP7","purl":"pkg:rpm/suse/python-urllib3_1&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Python%203%2015%20SP7"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.26.18-150600.3.6.1"}]}],"ecosystem_specific":{"binaries":[{"python311-urllib3_1":"1.26.18-150600.3.6.1"}]},"database_specific":{"source":"https://ftp.suse.com/pub/projects/security/osv/SUSE-SU-2026:0635-1.json"}},{"package":{"name":"python-urllib3_1","ecosystem":"openSUSE:Leap 15.6","purl":"pkg:rpm/opensuse/python-urllib3_1&distro=openSUSE%20Leap%2015.6"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.26.18-150600.3.6.1"}]}],"ecosystem_specific":{"binaries":[{"python311-urllib3_1":"1.26.18-150600.3.6.1"}]},"database_specific":{"source":"https://ftp.suse.com/pub/projects/security/osv/SUSE-SU-2026:0635-1.json"}}],"schema_version":"1.7.5"}