RCE in Vim
CVE-2026-59858
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.
Vulnerability class: RCE (Remote Code Execution)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.001 (2.7th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 3rd percentile — 2.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.001 · newest: 0.001 · change: 0.000
Affected products
- Vim — versions < 9.2.0735
Weakness classification (CWE)
References
- github.com/vim/vim/security/advisories/GHSA-mf92-v4xw-j45x (Patch, Vendor Advisory)
- github.com/vim/vim/commit/6b611b0d15603c52ebdad17172b0232b4f65704e (Patch)
Frequently asked questions
- What is CVE-2026-59858?
- CVE-2026-59858 is a high-severity vulnerability in Vim, classified under Code Injection. CVSS score: 7.8/10. Published 2026-07-09.
- How severe is CVE-2026-59858?
- High severity. CVSS v3 base score is 7.8 out of 10.