CVE-2026-73073

Vim: Arbitrary Ex Command Execution in C Omni-Completion

State: Published
Severity: 7.1 High
Published: Aug 18, 2026
Updated: Aug 18, 2026
Reserved: Aug 10, 2026

Description

Vim is an open source, command line text editor. Prior to 9.2.0845, StructMembers() in runtime/autoload/ccomplete.vim constructs and executes a vimgrep command using an insufficiently escaped typeref: or typename: value from a tags file, allowing an unterminated collection followed by a command separator to execute arbitrary Ex and operating-system commands when a user invokes C omni-completion with CTRL-X CTRL-O on a member access whose type is resolved from that tags file. This issue is fixed in version 9.2.0845.

Scores

CVSS	Score	Vector	Source
4.0	7.1 High	CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N	GitHub_M

Weaknesses

CWE-94 Improper Control of Generation of Code ('Code Injection')
CWE-829 Inclusion of Functionality from Untrusted Control Sphere

Affected Products

Product	Versions
vimvim	< 9.2.0845Affected

References

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