CVE-2026-54327: Earendil-Works Pi

Low severity, CVSS 2.2. EPSS: 0.1% chance of exploitation in the next 30 days.

Pi is a minimal terminal coding harness. From 0.74.0 until 0.78.1, Pi stored API keys and OAuth credentials in auth.json. A race condition in the file write path could briefly create or rewrite this file with permissions derived from the process umask before tightening the file to owner-only permissions. This vulnerability is fixed in 0.78.1.

Affected products

• Earendil-Works Pi: from 0.74.0, before 0.78.1 (fixed in 0.78.1)

Published 2026-06-23. Last modified 2026-06-26.