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CVE-2026-59858 is an arbitrary Ex-command injection vulnerability in Vim before version 9.2.0735. The C omni-completion script, located in runtime/autoload/ccomplete.vim, interpolates the typeref: or typename: extension field from a tags entry into a :vimgrep pattern executed through :execute without escaping. A crafted tag field containing a bar can terminate the intended search pattern and append an attacker-controlled Ex command. When a user opens a hostile C project whose tags file contains the crafted entry and invokes C omni-completion, Vim executes the appended command with the privileges of the editing user.
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What an attacker gets, and what they’ve been doing with it.
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No public exploits tracked yet. Mallory keeps watching.
No public exploit code observed for this vulnerability.
Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.
Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
35 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
An important-severity vulnerability addressed by an Alma Linux 9.6 local security-check advisory. It has a CVSS v3 vector of AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H, indicating high impact after local attack with required user interaction; the content states that exploits are available.
An important-severity vulnerability covered by a TuxCare Rocky Linux 9.6 security advisory. It is rated CVSS v3 7.8 (High) with local attack vector, no privileges required, and user interaction required; the advisory states exploit code is available.
An important-severity vulnerability tracked as CVE-2026-59858, assessed as a local attack requiring user interaction and capable of high impact to confidentiality, integrity, and availability.
An important-severity vulnerability addressed by a TuxCare/CentOS 8.5 local security update. It is scored as a local attack (CVSS v3 AV:L) requiring user interaction, with high confidentiality, integrity, and availability impact.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.