SB2026062908 - Code Injection in Vim

Description

This security bulletin contains information about 1 vulnerability.

1) Code Injection (CVE-ID: N/A)

CWE-ID: CWE-94 - Improper Control of Generation of Code ('Code Injection')

CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Green

The vulnerability allows a local user to execute arbitrary code.

The vulnerability exists due to improper neutralization of special elements in the C omni-completion script in runtime/autoload/ccomplete.vim when processing type information from a tags entry during omni-completion. A local user can supply a crafted tags entry and trick the victim into invoking C omni-completion on a hostile .c file to execute arbitrary code.

User interaction is required to open a hostile .c file and invoke omni-completion on a structure-member access, and the issue is reachable only when filetype plugins are enabled and a reachable tags file is used.

Remediation

Install update from vendor's website.

References

• https://github.com/vim/vim/security/advisories/GHSA-mf92-v4xw-j45x
• https://github.com/vim/vim/commit/6b611b0d15603c52ebdad17172b0232b4f65704e