{"id":"CLSA-2026-1781620276","summary":"Fix CVE(s): CVE-2026-0672, CVE-2026-3644, CVE-2026-4224","details":"   * SECURITY UPDATE: Control characters not rejected in Cookie module (HTTP header injection)\n     - debian/patches/CVE-2026-0672.patch: add _has_control_character() helper and\n       reject control characters in Morsel.__setitem__(), Morsel.set() and\n       BaseCookie.output() in Lib/Cookie.py, plus regression tests in\n       Lib/test/test_cookie.py\n     - CVE-2026-0672\n   * SECURITY UPDATE: Incomplete rejection of control characters in Cookie module\n     - debian/patches/CVE-2026-3644.patch: add control character validation to\n       Morsel.update() and Morsel.js_output() in Lib/Cookie.py\n     - CVE-2026-3644\n   * SECURITY UPDATE: C stack overflow via deeply nested inline DTD content model in pyexpat\n     - debian/patches/CVE-2026-4224.patch: add Py_EnterRecursiveCall/Py_LeaveRecursiveCall\n       guards to conv_content_model() in Modules/pyexpat.c to prevent unbounded C recursion\n       when ElementDeclHandler is registered\n     - CVE-2026-4224","modified":"2026-10-26T09:32:05.227518273Z","published":"2026-06-16T14:31:34Z","upstream":["CVE-2026-0672","CVE-2026-3644","CVE-2026-4224"],"references":[{"type":"ADVISORY","url":"https://errata.tuxcare.com/els_os/ubuntu20.04els/CLSA-2026-1781620276.html"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-0672"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-3644"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-4224"}],"affected":[{"package":{"name":"idle-python2.7","ecosystem":"TuxCare:Ubuntu:20.04","purl":"pkg:deb/tuxcare/idle-python2.7?distro=ubuntu-20.04"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.7.18-1~20.04.7+tuxcare.els3"}]}],"database_specific":{"source":"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu20.04els/CLSA-2026-1781620276.json"}},{"package":{"name":"libpython2.7","ecosystem":"TuxCare:Ubuntu:20.04","purl":"pkg:deb/tuxcare/libpython2.7?distro=ubuntu-20.04"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.7.18-1~20.04.7+tuxcare.els3"}]}],"database_specific":{"source":"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu20.04els/CLSA-2026-1781620276.json"}},{"package":{"name":"libpython2.7-dev","ecosystem":"TuxCare:Ubuntu:20.04","purl":"pkg:deb/tuxcare/libpython2.7-dev?distro=ubuntu-20.04"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.7.18-1~20.04.7+tuxcare.els3"}]}],"database_specific":{"source":"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu20.04els/CLSA-2026-1781620276.json"}},{"package":{"name":"libpython2.7-minimal","ecosystem":"TuxCare:Ubuntu:20.04","purl":"pkg:deb/tuxcare/libpython2.7-minimal?distro=ubuntu-20.04"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.7.18-1~20.04.7+tuxcare.els3"}]}],"database_specific":{"source":"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu20.04els/CLSA-2026-1781620276.json"}},{"package":{"name":"libpython2.7-stdlib","ecosystem":"TuxCare:Ubuntu:20.04","purl":"pkg:deb/tuxcare/libpython2.7-stdlib?distro=ubuntu-20.04"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.7.18-1~20.04.7+tuxcare.els3"}]}],"database_specific":{"source":"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu20.04els/CLSA-2026-1781620276.json"}},{"package":{"name":"libpython2.7-testsuite","ecosystem":"TuxCare:Ubuntu:20.04","purl":"pkg:deb/tuxcare/libpython2.7-testsuite?distro=ubuntu-20.04"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.7.18-1~20.04.7+tuxcare.els3"}]}],"database_specific":{"source":"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu20.04els/CLSA-2026-1781620276.json"}},{"package":{"name":"python2.7","ecosystem":"TuxCare:Ubuntu:20.04","purl":"pkg:deb/tuxcare/python2.7?distro=ubuntu-20.04"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.7.18-1~20.04.7+tuxcare.els3"}]}],"database_specific":{"source":"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu20.04els/CLSA-2026-1781620276.json"}},{"package":{"name":"python2.7-dev","ecosystem":"TuxCare:Ubuntu:20.04","purl":"pkg:deb/tuxcare/python2.7-dev?distro=ubuntu-20.04"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.7.18-1~20.04.7+tuxcare.els3"}]}],"database_specific":{"source":"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu20.04els/CLSA-2026-1781620276.json"}},{"package":{"name":"python2.7-doc","ecosystem":"TuxCare:Ubuntu:20.04","purl":"pkg:deb/tuxcare/python2.7-doc?distro=ubuntu-20.04"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.7.18-1~20.04.7+tuxcare.els3"}]}],"database_specific":{"source":"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu20.04els/CLSA-2026-1781620276.json"}},{"package":{"name":"python2.7-examples","ecosystem":"TuxCare:Ubuntu:20.04","purl":"pkg:deb/tuxcare/python2.7-examples?distro=ubuntu-20.04"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.7.18-1~20.04.7+tuxcare.els3"}]}],"database_specific":{"source":"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu20.04els/CLSA-2026-1781620276.json"}},{"package":{"name":"python2.7-minimal","ecosystem":"TuxCare:Ubuntu:20.04","purl":"pkg:deb/tuxcare/python2.7-minimal?distro=ubuntu-20.04"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.7.18-1~20.04.7+tuxcare.els3"}]}],"database_specific":{"source":"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu20.04els/CLSA-2026-1781620276.json"}}],"schema_version":"1.9.0"}