CVE-2026-34982
Vim modeline bypass via various options affects Vim < 9.2.0276
- State
- Published
- Severity
- 8.2 High
- Published
- Apr 6, 2026
- Updated
- Sep 18, 2026
- Reserved
- Mar 31, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 8.2 High | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N | GitHub_M |
| 3.1 | 8.2 High | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N | redhat-SADP |
Weaknesses
- CWE-78 Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
Affected Products
| Product | Versions |
|---|---|
vimvim |
|
References
- 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://access.redhat.com/security/cve/CVE-2026-34982vdb-entry
- RHBZ#2455400issue-tracking
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-34982.json
- https://access.redhat.com/errata/RHSA-2026:68711vendor-advisory
- https://access.redhat.com/errata/RHSA-2026:59831vendor-advisory
- https://access.redhat.com/errata/RHSA-2026:65839vendor-advisory
- https://access.redhat.com/errata/RHSA-2026:56786vendor-advisory
- https://access.redhat.com/errata/RHSA-2026:56911vendor-advisory
- https://access.redhat.com/errata/RHSA-2026:56853vendor-advisory
- https://access.redhat.com/errata/RHSA-2026:60019vendor-advisory
- https://access.redhat.com/errata/RHSA-2026:57483vendor-advisory
- https://access.redhat.com/errata/RHSA-2026:57402vendor-advisory
- https://access.redhat.com/errata/RHSA-2026:30900vendor-advisory
- https://access.redhat.com/errata/RHSA-2026:11389vendor-advisory
- https://access.redhat.com/errata/RHSA-2026:19073vendor-advisory
- https://access.redhat.com/errata/RHSA-2026:11509vendor-advisory
- https://access.redhat.com/errata/RHSA-2026:33453vendor-advisory
- https://access.redhat.com/errata/RHSA-2026:34477vendor-advisory
- https://access.redhat.com/errata/RHSA-2026:34476vendor-advisory
- https://access.redhat.com/errata/RHSA-2026:28133vendor-advisory
- https://access.redhat.com/errata/RHSA-2026:28049vendor-advisory
- https://access.redhat.com/errata/RHSA-2026:28050vendor-advisory
- https://access.redhat.com/errata/RHSA-2026:11510vendor-advisory
- https://access.redhat.com/errata/RHSA-2026:19224vendor-advisory
- https://access.redhat.com/errata/RHSA-2026:36004vendor-advisory
- https://access.redhat.com/errata/RHSA-2026:36005vendor-advisory
- https://access.redhat.com/errata/RHSA-2026:36006vendor-advisory
- https://access.redhat.com/errata/RHSA-2026:30078vendor-advisory
- https://access.redhat.com/errata/RHSA-2026:30089vendor-advisory
- https://access.redhat.com/errata/RHSA-2026:30088vendor-advisory
- https://access.redhat.com/errata/RHSA-2026:30087vendor-advisory
- https://access.redhat.com/errata/RHSA-2026:22634vendor-advisory
- https://access.redhat.com/errata/RHSA-2026:58981vendor-advisory
- https://access.redhat.com/errata/RHSA-2026:21275vendor-advisory
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