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

highCVSS 7.8CVE-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.

Details

Source: NVD Recent CVEs (US · database · site)
Severity: high — CVSS 7.8
Published: 2026-07-09
Last updated: 2026-07-10
Exploitation: Not in CISA KEV at last sync

Original advisory: https://nvd.nist.gov/vuln/detail/CVE-2026-59858

Exploitation outlook

EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

Low exploitation riskCVE-2026-598580.13% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 3% of all scored CVEs.

Referenced CVEs

CVE	CSIRTS overview	External
CVE-2026-59858	coverage & exploitation status	NVD · CVE.org

Same CVEs, other sources

How other CERTs, PSIRTs and databases cover the vulnerabilities in this advisory.

medium[UPDATE] [medium] vim: Multiple vulnerabilities allow code executioncert-bund

Recent advisories for Vim is an

A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.

medium[UPDATE] [medium] vim: Multiple vulnerabilities allow code executioncert-bund · 2026-07-10
medium[UPDATE] [medium] vim: Vulnerability allows Denial of Servicecert-bund · 2026-07-10
mediumCVE-2026-59857: Vim is an open source, command line text editor. Prior to 9.2.0725, the single-byte branch of …nvd · 2026-07-09
highCVE-2026-59856: Vim is an open source, command line text editor. Prior to 9.2.0736, the PHP omni-completion sc…nvd · 2026-07-09
high[UPDATE] [high] vim: Vulnerability allows code executioncert-bund · 2026-07-07
medium[UPDATE] [medium] vim: Multiple vulnerabilitiescert-bund · 2026-07-03