CVE-2026-34982

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.

• CWE-78
• CWE-78

• https://github.com/vim/vim/commit/75661a66a1db1e1f3f1245c615Patch
• https://github.com/vim/vim/releases/tag/v9.2.0276Release Notes
• https://github.com/vim/vim/security/advisories/GHSA-8h6p-m6gr-mpw9Patch, Vendor Advisory
• http://www.openwall.com/lists/oss-security/2026/04/01/1Mailing List, Patch, Third Party Advisory
• https://access.redhat.com/errata/RHSA-2026:11389
• https://access.redhat.com/errata/RHSA-2026:11509
• https://access.redhat.com/errata/RHSA-2026:11510
• https://access.redhat.com/errata/RHSA-2026:19073
• https://access.redhat.com/errata/RHSA-2026:19224
• https://access.redhat.com/errata/RHSA-2026:21275
• https://access.redhat.com/errata/RHSA-2026:22634
• https://access.redhat.com/errata/RHSA-2026:28049
• https://access.redhat.com/errata/RHSA-2026:28050
• https://access.redhat.com/errata/RHSA-2026:28133
• https://access.redhat.com/errata/RHSA-2026:30078
• https://access.redhat.com/errata/RHSA-2026:30087
• https://access.redhat.com/errata/RHSA-2026:30088
• https://access.redhat.com/errata/RHSA-2026:30089
• https://access.redhat.com/errata/RHSA-2026:30900
• https://access.redhat.com/errata/RHSA-2026:33453
• https://access.redhat.com/errata/RHSA-2026:34476
• https://access.redhat.com/errata/RHSA-2026:34477
• https://access.redhat.com/errata/RHSA-2026:36004
• https://access.redhat.com/errata/RHSA-2026:36005
• https://access.redhat.com/errata/RHSA-2026:36006
• https://access.redhat.com/security/cve/CVE-2026-34982
• https://bugzilla.redhat.com/show_bug.cgi?id=2455400
• https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-34982.json

Published

Apr 6, 2026

Last Modified

Jul 15, 2026

Status

Modified

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