The codexui-android npm package silently exfiltrated OpenAI Codex auth tokens to an attacker server for a month, affecting 29,000 weekly downloads.

Codex tokens were exfiltrated via a popular npm package, affecting users since v0.1.82 and enabling persistent account access.

The incident highlights how attackers can hide malicious code in software packages that differ from the source code available for review.

The codexui-android npm package silently exfiltrated OpenAI Codex auth tokens to an attacker server for a month, affecting 29,000 weekly downloads.