harden: add path validation in contactsheet.mjs - #12
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Automated security fix generated by OrbisAI Security
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Summary
Harden input handling in
skills/goal-to-game/engines/threejs/tools/contactsheet.mjs(flagged by multi_agent_ai).Vulnerability
V-001skills/goal-to-game/engines/threejs/tools/contactsheet.mjs:20Description: Both contactsheet.mjs and pixelstats.mjs accept a directory path from command-line arguments (process.argv[2]) and resolve it using path.resolve() without any validation. This allows an attacker who can control the CLI arguments to read files from arbitrary locations on the filesystem using path traversal sequences like '../../../etc/passwd'. The tools then read PNG files from the specified directory and process them, potentially exposing sensitive file contents or system information.
Changes
skills/goal-to-game/engines/threejs/tools/contactsheet.mjsBehavior Preservation
The change is scoped to 1 file on the vulnerable path; it only tightens handling of untrusted input and leaves valid inputs unaffected.
This patch removes an exploit primitive — a code pattern that, while not independently exploitable today, could be chained with other weaknesses by automated exploit-development tooling. Proactive removal of such primitives raises the bar against increasingly capable automated attack tools.
Automated security fix by OrbisAI Security