Name: CVE-2026-105840: Improper Limitation of a Pathname to a Restricted Directory
Creator: Rapid7
Published: 2026-10-06T00:00:00.000Z
License: https://www.rapid7.com/legal/website-terms-of-use/
Keywords: CVE, CVE-2026-105840, CWE-22, CVSS 7.5, EPSS 0.00313

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.

CVSS Details

CVSS 4.0 Base Score: 7.7 (HIGH)
CVSS 4.0 Vector: (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)
CVSS 3.1 Base Score: 7.5
CVSS 3.1 Vector: (CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H)

Covered by Rapid7

Product	Vendor Advisory	Solution File	Added	Published
Alma_linux	—	Upgrade lrzsz	Oct 15, 2026	Oct 15, 2026
Oracle_linux	—	Upgrade lrzsz	Oct 22, 2026	Oct 6, 2026
Redhat_linux	—	Upgrade lrzszNo solution existsUpgrade lrzsz-debugsourceUpgrade lrzsz-debuginfo	Oct 8, 2026	Oct 6, 2026
Rocky_linux	—	Upgrade lrzsz-debugsourceUpgrade lrzszUpgrade lrzsz-debuginfo	Oct 19, 2026	Oct 16, 2026

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CVSS Details

Covered by Rapid7

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