Copyright © 2012 Red Hat, Inc. All rights reserved. Moderate 2026-07-09T22:37:52 vim: Vim: Arbitrary command execution via crafted tags file in C omni-completion 6.5 CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:L CWE-94

Vim is an open source, command line text editor. Prior to 9.2.0735, the C omni-completion script in runtime/autoload/ccomplete.vim interpolates the typeref: or typename: extension field of a tags entry, without escaping, into a :vimgrep pattern that is run through :execute. Because :vimgrep honors the bar as a command separator, a crafted tag field can close the search pattern and append an arbitrary Ex command; opening a hostile .c file whose project tags file contains such an entry and invoking C omni-completion runs that command as the editing user. This issue is fixed in version 9.2.0735.

A command injection vulnerability in Vim's C omni-completion script allows an attacker to execute arbitrary commands if a user is tricked into opening a maliciously crafted tags file and manually invoking the autocomplete feature.

This Moderate flaw in Vim's C omni-completion script allows for arbitrary command execution. Exploitation requires a user to open a specially crafted C source file along with a malicious project tags file and then invoke C omni-completion. This limits the attack vector as it relies on specific user interaction and the presence of a hostile tags file, making it less likely to be exploited without user awareness. Users are advised to avoid opening untrusted C source files or project tags files in Vim. Exercising caution and only processing trusted content prevents exploitation. Red Hat Hardened Images 2026-07-03T00:00:00Z RHSA-2026:35387 vim-main-9.2.780-1.hum1 Red Hat Enterprise Linux 10 Affected vim Red Hat Enterprise Linux 6 Affected vim Red Hat Enterprise Linux 7 Affected vim Red Hat Enterprise Linux 8 Affected vim Red Hat Enterprise Linux 9 Affected vim Red Hat OpenShift Container Platform 4 Affected rhcos https://www.cve.org/CVERecord?id=CVE-2026-59858 https://nvd.nist.gov/vuln/detail/CVE-2026-59858 https://github.com/vim/vim/commit/6b611b0d15603c52ebdad17172b0232b4f65704e https://github.com/vim/vim/security/advisories/GHSA-mf92-v4xw-j45x