{"id":"USN-8229-1","summary":"sed vulnerability","details":"Michał Majchrowicz and Marcin Wyczechowski discovered that sed incorrectly\nhandled symbolic links when performing in-place edits. A local attacker\ncould possibly use this issue to overwrite arbitrary files.","modified":"2026-05-20T16:04:03.111048743Z","published":"2026-05-04T12:24:18Z","related":["UBUNTU-CVE-2026-5958"],"upstream":["UBUNTU-CVE-2026-5958"],"references":[{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-8229-1"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-5958"}],"affected":[{"package":{"name":"sed","ecosystem":"Ubuntu:22.04:LTS","purl":"pkg:deb/ubuntu/sed?arch=source&distro=jammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.8-1ubuntu2.1"}]}],"versions":["4.7-1ubuntu1","4.7-1ubuntu2","4.8-1ubuntu1","4.8-1ubuntu2"],"ecosystem_specific":{"binaries":[{"binary_name":"sed","binary_version":"4.8-1ubuntu2.1"}],"availability":"No subscription required"},"database_specific":{"cves_map":{"cves":[{"severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N"},{"type":"Ubuntu","score":"medium"}],"id":"CVE-2026-5958"}],"ecosystem":"Ubuntu:22.04:LTS"},"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8229-1.json"}},{"package":{"name":"sed","ecosystem":"Ubuntu:24.04:LTS","purl":"pkg:deb/ubuntu/sed?arch=source&distro=noble"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.9-2ubuntu0.24.04.1"}]}],"versions":["4.9-1","4.9-2","4.9-2build1"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_name":"sed","binary_version":"4.9-2ubuntu0.24.04.1"}]},"database_specific":{"cves_map":{"ecosystem":"Ubuntu:24.04:LTS","cves":[{"id":"CVE-2026-5958","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N"},{"type":"Ubuntu","score":"medium"}]}]},"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8229-1.json"}},{"package":{"name":"sed","ecosystem":"Ubuntu:25.10","purl":"pkg:deb/ubuntu/sed?arch=source&distro=questing"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.9-2ubuntu0.25.10.1"}]}],"versions":["4.9-2build1","4.9-2build2"],"ecosystem_specific":{"binaries":[{"binary_name":"sed","binary_version":"4.9-2ubuntu0.25.10.1"}],"availability":"No subscription required"},"database_specific":{"cves_map":{"cves":[{"id":"CVE-2026-5958","severity":[{"score":"CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N","type":"CVSS_V4"},{"type":"Ubuntu","score":"medium"}]}],"ecosystem":"Ubuntu:25.10"},"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8229-1.json"}},{"package":{"name":"sed","ecosystem":"Ubuntu:26.04:LTS","purl":"pkg:deb/ubuntu/sed?arch=source&distro=resolute"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.9-2ubuntu1"}]}],"versions":["4.9-2build2","4.9-2build3"],"ecosystem_specific":{"binaries":[{"binary_version":"4.9-2ubuntu1","binary_name":"sed"}],"availability":"No subscription required"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8229-1.json","cves_map":{"ecosystem":"Ubuntu:26.04:LTS","cves":[{"id":"CVE-2026-5958","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N"},{"score":"medium","type":"Ubuntu"}]}]}}}],"schema_version":"1.7.5"}