CVE-2026-43961

Vim: vimscript injection via unescaped filename in netrw s:netrwmarkfile() filter() expression allows arbitrary code execution

State: Published
Severity: 7.8 High
Published: Aug 19, 2026
Updated: Oct 30, 2026
Reserved: May 4, 2026

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Description

A flaw was found in Vim's netrw plugin. A crafted filename containing quote characters and expression fragments can break out of the quoted context during mark/unmark operations, allowing arbitrary Vimscript execution. This can be leveraged to run shell commands with the privileges of the user running Vim.

Scores

CVSS	Score	Vector	Source
3.1	7.8 High	CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H	redhat

Weaknesses

CWE-94 Improper Control of Generation of Code ('Code Injection')

Affected Products

Product	Versions
vimvim	before 9.2.0480Affected
Red Hat Hardened ImagesRed Hat	9.2.967-1.1.hum1 and laterNot affected
Red Hat Enterprise Linux 10Red Hat
Red Hat Enterprise Linux 6Red Hat
Red Hat Enterprise Linux 7Red Hat
Red Hat Enterprise Linux 8Red Hat
Red Hat Enterprise Linux 9Red Hat
Red Hat OpenShift Container Platform 4Red Hat
Red Hat OpenShift Container Platform 4Red Hat
Red Hat OpenShift Container Platform 5Red Hat

References

RHSA-2026:57614vendor-advisory
https://access.redhat.com/security/cve/CVE-2026-43961vdb-entry
RHBZ#2460434issue-tracking
https://github.com/vim/vim/security/advisories/GHSA-66hr-7p6x-x5j3
http://www.openwall.com/lists/oss-security/2026/05/14/7

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