{"id":"DEBIAN-CVE-2026-6390","details":"A flaw was found in GNU nano's multi-buffer error message handling. When a user opens multiple files at startup and one triggers an ALERT-level error, a specially crafted filename containing printf format specifiers can be reinterpreted. This format string vulnerability may allow an attacker to achieve stack information disclosure, cause a denial of service (crash), or potentially perform arbitrary memory writes.","modified":"2026-09-14T17:03:44.642082306Z","published":"2026-07-23T05:16:38.360Z","upstream":["CVE-2026-6390"],"references":[{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2026-6390"}],"affected":[{"package":{"name":"nano","ecosystem":"Debian:12","purl":"pkg:deb/debian/nano?arch=source&distro=bookworm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["7.2-1","7.2-1+deb12u1","7.2-2","8.0-1","8.1-1","8.2-1","8.3-1","8.4-1","8.5-1","8.6-1","8.7-1","8.7.1-1","9.0-1","9.1-1","9.2-1"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-6390.json"}},{"package":{"name":"nano","ecosystem":"Debian:13","purl":"pkg:deb/debian/nano?arch=source&distro=trixie"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["8.4-1","8.4-1+deb13u1","8.5-1","8.6-1","8.7-1","8.7.1-1","9.0-1","9.1-1","9.2-1"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-6390.json"}},{"package":{"name":"nano","ecosystem":"Debian:14","purl":"pkg:deb/debian/nano?arch=source&distro=forky"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"9.0-1"}]}],"versions":["8.4-1","8.5-1","8.6-1","8.7-1","8.7.1-1"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-6390.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:L/I:H/A:H"}]}