CVE-2026-34982

Vim modeline bypass via various options affects Vim < 9.2.0276

Published: 4/6/2026 Last updated: 4/7/2026 Reserved: 3/31/2026

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.

CNA assigner: GitHub_M (a0819718-46f1-4df5-94e2-005712e83aaa) Requested by: n/a

Metrics

Version	Score	Severity	Vector String
3.1	8.2	High	CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N

Opam packages affected (1)

conf-vim

Products affected (1)

Product	Vendor	Version
vim	vim	n/a

References (8)

https://github.com/vim/vim/security/advisories/GHSA-8h6p-m6gr-mpw9
https://github.com/vim/vim/commit/75661a66a1db1e1f3f1245c615
https://github.com/vim/vim/releases/tag/v9.2.0276
http://www.openwall.com/lists/oss-security/2026/04/01/1
https://github.com/vim/vim/security/advisories/GHSA-8h6p-m6gr-mpw9
https://github.com/vim/vim/commit/75661a66a1db1e1f3f1245c615
https://github.com/vim/vim/releases/tag/v9.2.0276
http://www.openwall.com/lists/oss-security/2026/04/01/1