CVE-2026-34982

High

Description

Vim is an open source, command line text editor. Prior to version 9.2.0276, a modeline sandbox bypass in Vim allows arbitrary OS command execution when a user opens a crafted file. The `complete`, `guitabtooltip` and `printheader` options are missing the `P_MLE` flag, allowing a modeline to be executed. Additionally, the `mapset()` function lacks a `check_secure()` call, allowing it to be abused from sandboxed expressions. Commit 9.2.0276 fixes the issue.

SeverityHigh

CVSS8.2

Exploit probability—

ProductVim

PublishedApr 6, 2026

First seenApr 6, 2026

Weakness typeCWE-78OS command injection

How to fix

Update

vim vim9.2.0276 or later

Vendor advisories

Affected products

Product	Affected versions	Fixed in
vim vim	v < 9.2.0276	9.2.0276

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