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CVE-2026-59856Vim: Arbitrary Code Execution via PHP Omni-Completion

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.

8.4 HIGHEPSS 0.21%Not in KEVNVD: Analyzed

Overview

Severity

ScoreSeverityVersionVector String
8.4HIGH4.0GitHub_M (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
7.8HIGH3.1NVDCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Details

CVE ID
CVE-2026-59856
Status
Analyzed
Assigner (CNA)
GitHub_M
Published
Jul 9, 2026
Last modified
2026-07-14 05:16 UTC
Weaknesses
  • CWE-94 · Improper Control of Generation of Code ('Code Injection')

Sources

Refreshed hourly from the sources above. Last fetched 2026-11-09 10:42 UTC.