Time-of-check Time-of-use (TOCTOU) Race Condition Affecting @earendil-works/pi-coding-agent package, versions <0.78.1
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-JS-EARENDILWORKSPICODINGAGENT-17739020
- published30 Jun 2026
- disclosed23 Jun 2026
- creditUnknown
Introduced: 23 Jun 2026
NewCVE-2026-54327 (opens in a new tab)How to fix?
Upgrade @earendil-works/pi-coding-agent to version 0.78.1 or higher.
Overview
@earendil-works/pi-coding-agent is a Coding agent CLI with read, bash, edit, write tools and session management
Affected versions of this package are vulnerable to Time-of-check Time-of-use (TOCTOU) Race Condition through a race condition in the auth.json file write process. An attacker can access sensitive credentials by exploiting a timing window where the file is created or rewritten with broader permissions before being restricted to owner-only access.