{"schema_version":"1.7.2","id":"OESA-2026-2605","modified":"2026-08-06T11:11:32Z","published":"2026-06-05T11:11:32Z","upstream":["CVE-2026-45409"],"summary":"python-idna security update","details":"A library to support the Internationalised Domain Names in Applications (IDNA) protocol as specified in RFC 5891 http://tools.ietf.org/html/rfc5891. This version of the protocol is often referred to as “IDNA2008” and can produce different results from the earlier standard from 2003.\r\n\r\nSecurity Fix(es):\n\nThis is the same issue as CVE-2024-3651, however the original remediation in 2024 was not a complete fix. Payloads such as "\\u0660" * N or "\\u30fb" * N + "\\u6f22" utilize the valid_contexto function prior to length rejection, and for high values of N will take a long time to process.(CVE-2026-45409)","affected":[{"package":{"ecosystem":"openEuler:24.03-LTS-SP1","name":"python-idna","purl":"pkg:rpm/openEuler/python-idna&distro=openEuler-24.03-LTS-SP1"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.6-5.oe2403sp1"}]}],"ecosystem_specific":{"noarch":["python-idna-help-3.6-5.oe2403sp1.noarch.rpm","python3-idna-3.6-5.oe2403sp1.noarch.rpm"],"src":["python-idna-3.6-5.oe2403sp1.src.rpm"]}},{"package":{"ecosystem":"openEuler:24.03-LTS-SP3","name":"python-idna","purl":"pkg:rpm/openEuler/python-idna&distro=openEuler-24.03-LTS-SP3"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.6-5.oe2403sp3"}]}],"ecosystem_specific":{"noarch":["python-idna-help-3.6-5.oe2403sp3.noarch.rpm","python3-idna-3.6-5.oe2403sp3.noarch.rpm"],"src":["python-idna-3.6-5.oe2403sp3.src.rpm"]}},{"package":{"ecosystem":"openEuler:20.03-LTS-SP4","name":"python-idna","purl":"pkg:rpm/openEuler/python-idna&distro=openEuler-20.03-LTS-SP4"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.10-4.oe2003sp4"}]}],"ecosystem_specific":{"noarch":["python2-idna-2.10-4.oe2003sp4.noarch.rpm","python3-idna-2.10-4.oe2003sp4.noarch.rpm"],"src":["python-idna-2.10-4.oe2003sp4.src.rpm"]}},{"package":{"ecosystem":"openEuler:22.03-LTS-SP4","name":"python-idna","purl":"pkg:rpm/openEuler/python-idna&distro=openEuler-22.03-LTS-SP4"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.2-5.oe2203sp4"}]}],"ecosystem_specific":{"noarch":["python3-idna-3.2-5.oe2203sp4.noarch.rpm"],"src":["python-idna-3.2-5.oe2203sp4.src.rpm"]}}],"references":[{"type":"ADVISORY","url":"https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-2605"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-45409"}],"severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N"}],"database_specific":{"severity":"Medium"}}