CVE-2026-43961

HIGH 7.8

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

CVSS Score

7.8

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-94
Vendor	red hat
Product	red hat enterprise linux 10
Published	Aug 19, 2026
Last Updated	Aug 19, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Attack Vector

Local

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Affected Versions

Red Hat / Red Hat Enterprise Linux 10

All versions affected

Red Hat / Red Hat Enterprise Linux 6

All versions affected

Red Hat / Red Hat Enterprise Linux 7

All versions affected

Red Hat / Red Hat Enterprise Linux 8

All versions affected

Red Hat / Red Hat Enterprise Linux 9

All versions affected

Red Hat / Red Hat OpenShift Container Platform 4

All versions affected

References

NVD ↗ CVE.org ↗ EPSS Data ↗

access.redhat.com: https://access.redhat.com/security/cve/CVE-2026-43961 bugzilla.redhat.com: https://bugzilla.redhat.com/show_bug.cgi?id=2460434 github.com: https://github.com/vim/vim/security/advisories/GHSA-66hr-7p6x-x5j3 openwall.com: http://www.openwall.com/lists/oss-security/2026/05/14/7

Credits

Red Hat would like to thank AISLE Research for reporting this issue.