Vulnerability · Published May 18, 2026 · Assigned by VulnCheck

CVE-2026-47090Claude HUD 0.0.12 Terminal Injection via OSC 8 Hyperlinks

Medium 4.6

In plain English

A medium-severity security flaw 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 0.1% (higher than 1% of all known vulnerabilities).

Severity (CVSS 3.1)4.6Medium

Exploit odds (30 days)0.1%top 99.0% 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, constructs OSC 8 terminal hyperlink escape sequences using raw cwd and branchUrl values without stripping control characters or encoding embedded values, allowing attackers to inject arbitrary ANSI codes into terminal sessions. Attackers can embed ESC+backslash sequences in the current working directory or branch URL to execute malicious ANSI codes including text color changes, forged prompts, and OSC 52 clipboard writes, or trigger outbound HTTP requests to attacker-controlled remotes when hyperlinks are clicked.

Affected products (as reported)

Vendor	Product	Versions
jarrodwatts	claude-hud	0 – through 0.0.12

Weakness: CWE-150 · Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

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-terminal-injection-via-osc-8-hyperlinks third-party-advisory