CVE CVE-2026-34982

CVE-2026-34982

Express

Severity: HIGH
CVSS: 8.2CVSS
Published: 2026-04-06
Last modified: 2026-04-06
CVSS vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N
CWE: CWE-78

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.

References

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

Summary

Description

References