Code Injection in Vim - #VU131625
Published: May 18, 2026
Vulnerability identifier: #VU131625
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: N/A
CWE-ID: CWE-94
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 code.
The vulnerability exists due to improper control of code generation in s:NetrwBookHistSave() in the netrw plugin when serializing browsed directory paths to the history file. A remote attacker can create a specially crafted directory name to execute arbitrary code.
User interaction is required to browse the crafted directory with netrw and later open any directory so the history file is sourced. The injected content persists in the history file until the entry is rotated out.
Remediation
Install security update from vendor's website.