What’s Vulnerable › Vulnerabilities

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

• Severity: medium (CVSS 4.6 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.1% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-05-18 · updated 2026-10-26
• Weakness: CWE-150

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

• jarrodwatts claude-hud: through 0.0.12

References

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

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