{"id":"CVE-2026-59858","aliases":["GHSA-mf92-v4xw-j45x"],"url":"https://o3.security/vulnerability/CVE-2026-59858","summary":"Vim: Arbitrary Code Execution via C Omni-Completion","details":"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.","published":"2026-07-09T22:37:52.789Z","modified":"2026-08-12T16:41:38.668912Z","cvss":null,"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[],"fix":{"url":"https://github.com/vim/vim/commit/6b611b0d15603c52ebdad17172b0232b4f65704e","label":"vim/vim@6b611b0"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/59xxx/CVE-2026-59858.json"},{"type":"ADVISORY","url":"https://github.com/vim/vim/security/advisories/GHSA-mf92-v4xw-j45x"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-59858"},{"type":"FIX","url":"https://github.com/vim/vim/commit/6b611b0d15603c52ebdad17172b0232b4f65704e"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-12T16:41:38.668912Z"}}