OS Command Injection in Vim - CVE-2026-46483
Published: May 15, 2026
Vulnerability identifier: #VU131544
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:A/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2026-46483
CWE-ID: CWE-78
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Vim.org
Affected software:
Vim
Vim
Detailed vulnerability description
The vulnerability allows a remote attacker to execute arbitrary shell commands.
The vulnerability exists due to improper neutralization of special elements in tar#Vimuntar() in runtime/autoload/tar.vim when decompressing .tgz archives via :Vimuntar on Unix-like systems. A remote attacker can supply a crafted archive filename to execute arbitrary shell commands.
User interaction is required to open the crafted file and invoke the non-routine :Vimuntar command, and only Unix-like systems with the tar plugin enabled are vulnerable.
How to mitigate CVE-2026-46483
Install security update from vendor's website.