ClaudeHookBridge deny-rule bypass via truncated command check

high severity · published 2026-08-13

ClaudeHookBridge checks deny rules against only the first 500 characters of a command, while Claude Code runs the full command. An attacker can hide dangerous content past byte 500 of a Bash command to bypass your hard-deny list and execute arbitrary commands.

Fixed in: 5.15.1

CVE: CVE-2026-73614

Source: NVD

Am I affected?

You are affected if the installed version is older than 5.15.1. Check the version you have and update to 5.15.1 or later. The fixed version is verified against a vendor or advisory source.

Get the fix

FixLane has a reviewed fix procedure for this incident: a read-only check first, then the fix. Ask the Telegram bot, or connect an AI agent to the FixLane MCP server and call get_fix_prompt with incident id 167 and your operating system.