{"id":"DEBIAN-CVE-2026-105840","details":"lrzsz before 0.13.0 contains a path traversal vulnerability in the lrz receive utility's restricted mode that allows malicious ZMODEM senders to write files outside the current directory using absolute pathnames. Because checkpath() in src/lrz.c only rejects '../' sequences unless built with --enable-pubdir, attackers can send files named with absolute paths to overwrite any file writable by the receiving user.","modified":"2026-10-09T10:00:43.374521834Z","published":"2026-10-06T14:17:41.300Z","upstream":["CVE-2026-105840"],"references":[{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2026-105840"}],"affected":[{"package":{"name":"lrzsz","ecosystem":"Debian:12","purl":"pkg:deb/debian/lrzsz?arch=source&distro=bookworm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.12.21-10","0.12.21-11","0.12.21rc-0.1","0.12.21rc-0.2","0.12.21rc-0.3","0.12.21rc-1","0.12.21rc-2","0.12.21rc-3","0.12.21rc-4","0.12.21rc-5"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-105840.json"}},{"package":{"name":"lrzsz","ecosystem":"Debian:13","purl":"pkg:deb/debian/lrzsz?arch=source&distro=trixie"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.12.21rc-0.2","0.12.21rc-0.3","0.12.21rc-1","0.12.21rc-2","0.12.21rc-3","0.12.21rc-4","0.12.21rc-5"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-105840.json"}},{"package":{"name":"lrzsz","ecosystem":"Debian:14","purl":"pkg:deb/debian/lrzsz?arch=source&distro=forky"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.12.21rc-0.2","0.12.21rc-0.3","0.12.21rc-1","0.12.21rc-2","0.12.21rc-3","0.12.21rc-4","0.12.21rc-5"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-105840.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X"}]}