AUGUST 24, 2026
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Case File

CVE-2026-59858

HIGH · CVSS 7.8 EPSS 0.14% Public Exploit

Source: NVD + CISA KEV + EPSS · Published 2026-07-09 · Last synced 2026-08-08

CyberRota Analysis

AI-Generated

The Vim text editor is vulnerable to command injection through its C omni-completion script, which improperly interpolates unescaped tag fields into a :vimgrep pattern. This flaw allows an attacker to execute arbitrary commands by crafting a malicious tags entry, posing a significant risk to users who open compromised .c files. Organizations using Vim versions prior to 9.2.0735 should prioritize updating to mitigate potential exploitation.

Public Exploit Signal

A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.

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CVE
CVE-2026-59858
Severity
HIGH
CVSS
7.8
EPSS
0.14%

Original NVD Description

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.

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