CVE-2026-105840

NameCVE-2026-105840
Descriptionlrzsz 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.
SourceCVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
Debian Bugs1150240

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
lrzsz (PTS)bookworm0.12.21-10vulnerable
trixie0.12.21rc-0.2vulnerable
forky, sid0.13.1-1fixed

The information below is based on the following data on fixed versions.

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
lrzszsource(unstable)0.12.21rc-51150240

Notes

[trixie] - lrzsz <no-dsa> (Minor issue)
https://ohse.de/uwe/software/lrzsz/NEWS-0.13.0.html

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