Code Injection in Vim - CVE-2026-43961

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Main Vulnerability Database Vulnerabilities #VU131545

Code Injection in Vim - CVE-2026-43961

Published: May 15, 2026


Vulnerability identifier: #VU131545
CSH Severity: Medium
CVSS v4: 4.6 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-43961
CWE-ID: CWE-94
Exploitation vector: Local access
Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a local user to execute arbitrary Vimscript and shell commands.

The vulnerability exists due to improper control of generation of code in s:NetrwMarkFile() in the netrw plugin when unmarking files from the global marked-file list. A local user can create a crafted filename containing a double quote and induce the victim to mark and unmark that entry to execute arbitrary Vimscript and shell commands.

User interaction is required, and the issue only triggers on the second mf press for a given entry. Exploitation requires a Unix-like system on which filenames may contain a double quote.


Affected software

Vim
SUSE Linux Enterprise Server 15 SP4
SUSE Linux Enterprise Server for SAP Applications 15
SUSE Linux Enterprise Server 15
SUSE Linux Enterprise High Performance Computing 15
SUSE Linux Enterprise High Performance Computing ESPOS 15
SUSE Linux Enterprise High Performance Computing LTSS 15
SUSE Linux Enterprise Micro
SUSE Linux Enterprise Micro for Rancher
SUSE Linux Micro
SUSE Linux Micro Extras
Ubuntu
openEuler
Anolis OS
vim (Ubuntu package)
vim-enhanced
vim-debugsource
vim-debuginfo
vim-common
vim-X11
vim
vim-filesystem
vim-minimal
vim-data
vim-doc
vim-data-common
vim-small
vim-small-debuginfo
gvim-debuginfo
gvim
xxd
xxd-debuginfo

How to mitigate CVE-2026-43961

Install security update from vendor's website.

Vim - update to 9.2.0480
vim (Ubuntu package) - addressed in versions 2:7.4.052-1ubuntu3.1+esm28, 2:7.4.1689-3ubuntu1.5+esm34, 2:8.0.1453-1ubuntu1.13+esm19, 2:8.1.2269-1ubuntu5.32+esm7, 2:8.2.3995-1ubuntu2.31, 2:9.1.0016-1ubuntu7.15, 2:9.1.0967-1ubuntu6.6, 2:9.1.2141-1ubuntu4.3
vim-enhanced - addressed in versions 9.0-49, 9.0.2092-35
vim-debugsource - addressed in versions 9.0-49, 9.0.2092-35
vim-debuginfo - addressed in versions 9.0-49, 9.0.2092-35
vim-common - addressed in versions 9.0-49, 9.0.2092-35
vim-X11 - addressed in versions 9.0-49, 9.0.2092-35
vim - addressed in versions 9.0-49, 9.0.2092-35
vim-filesystem - addressed in versions 9.0-49, 9.0.2092-35
vim-minimal - addressed in versions 9.0-49, 9.0.2092-35
vim-filesystem - update to 9.0.2092-26
vim-X11 - update to 9.0.2092-26
vim-common - update to 9.0.2092-26
vim-enhanced - update to 9.0.2092-26
vim-minimal - update to 9.0.2092-26
vim-data - update to 9.0.2092-26
vim-doc - update to 9.0.2092-26
vim-data-common - addressed in versions 9.2.0530-slfo.1.1_1.1, 9.2.0530-150000.5.94.1, 9.2.0530-160000.1.1
vim-debugsource - addressed in versions 9.2.0530-slfo.1.1_1.1, 9.2.0530-150000.5.94.1, 9.2.0530-160000.1.1
vim - addressed in versions 9.2.0530-slfo.1.1_1.1, 9.2.0530-150000.5.94.1, 9.2.0530-160000.1.1
vim-debuginfo - addressed in versions 9.2.0530-slfo.1.1_1.1, 9.2.0530-150000.5.94.1, 9.2.0530-160000.1.1
vim-small - addressed in versions 9.2.0530-slfo.1.1_1.1, 9.2.0530-150000.5.94.1, 9.2.0530-160000.1.1
vim-small-debuginfo - addressed in versions 9.2.0530-slfo.1.1_1.1, 9.2.0530-150000.5.94.1, 9.2.0530-160000.1.1
gvim-debuginfo - update to 9.2.0530-150000.5.94.1
gvim - update to 9.2.0530-150000.5.94.1
vim-data - update to 9.2.0530-150000.5.94.1
xxd - update to 9.2.0530-160000.1.1
xxd-debuginfo - update to 9.2.0530-160000.1.1

External References

Related Security Bulletins