Vulnerability · Published May 18, 2026 · Assigned by VulnCheck

CVE-2026-47092Claude HUD 0.0.12 Arbitrary Command Execution via COMSPEC Environment Variable

High 7.8

In plain English

A high-severity uncontrolled search path in claude-hud from jarrodwatts. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 44% of all known vulnerabilities).

Severity (CVSS 3.1)7.8High

Exploit odds (30 days)0.5%top 56.3% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

Claude HUD through 0.0.12, patched in commit 234d9aa, contains a command injection vulnerability that allows local attackers to execute arbitrary commands by manipulating the COMSPEC environment variable. Attackers can set COMSPEC to an arbitrary binary path before claude-hud performs its version check, causing execFile() to execute the attacker-supplied executable with cmd.exe arguments, resulting in arbitrary code execution on Windows systems.

Affected products (as reported)

Vendor	Product	Versions
jarrodwatts	claude-hud	0 – through 0.0.12

Weakness: CWE-427 · Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

References

https://github.com/jarrodwatts/claude-hud/issues/485 issue-tracking
https://github.com/jarrodwatts/claude-hud/pull/487 issue-tracking
https://github.com/jarrodwatts/claude-hud/commit/234d9aad919b51326a43bcf90b45ae35c23afc30 patch
https://www.vulncheck.com/advisories/claude-hud-arbitrary-command-execution-via-comspec-environment-variable third-party-advisory