CVE-2026-59856 | Vim is an open source, command line text editor. Prior to 9.… | CVSS 8.4 HIGH

Description

Vim is an open source, command line text editor. Prior to 9.2.0736, the PHP omni-completion script in runtime/autoload/phpcomplete.vim interpolates a class or trait name, taken from the contents of the edited buffer, into a search() pattern that is run via win_execute() without escaping. A name containing a single quote can terminate the search() string argument early, and because the bar is honored as an Ex command separator, the remainder of the name is run as Ex commands; via the :! command this allows arbitrary operating-system command execution when a victim opens a crafted PHP file and invokes omni-completion. This issue is fixed in version 9.2.0736.

Metadata

CVE ID: CVE-2026-59856
State: PUBLISHED
Assigner: GitHub_M
Reserved: 2026-07-07 15:41 UTC
Published: 2026-07-09 22:39 UTC
Last updated: 2026-07-09 22:39 UTC
Primary CWE: CWE-94
CWE-94: Improper Control of Generation of Code ('Code Inject…
Vendor / Product: vim / vim
Sources: cve.org · NVD

Severity & Metrics

8.4 HIGH CVSS 4.0

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

Affected products (1)

Vendor	Product	Platform	Versions
vim	vim	—	< 9.2.0736

Weakness (CWE)

CWE	Source	Description
CWE-94	cna	CWE-94: Improper Control of Generation of Code ('Code Injection')

CVSS scores (1)

Score	Severity	Version	Source	Vector
8.4	HIGH	4.0	cna	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

References (2)

https://github.com/vim/vim/security/advisories/GHSA-fh26-8f79-wj97 https://github.com/vim/vim/security/advisories/GHSA-fh26-8f79-wj97
https://github.com/vim/vim/commit/43afc581a37a35762dd0ef292f038b9dc5680a24 https://github.com/vim/vim/commit/43afc581a37a35762dd0ef292f038b9dc5680a24