CVE-2026-54327 PUBLISHED

Pi: Race condition in auth.json writes could expose stored credentials

Assigner: GitHub_M
Reserved: 12.06.2026 Published: 23.06.2026 Updated: 23.06.2026

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.

Metrics

CVSS 3.1

CVSS Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:L/I:N/A:N
CVSS Score: 2.2

Attack Vector	Local	Scope	Unchanged
Attack Complexity	High	Confidentiality Impact	Low
Privileges Required	Low	Integrity Impact	None
User Interaction	Required	Availability Impact	None

CVSS 3.1

Product Status

Vendor	earendil-works
Product	pi
Versions	Version >= 0.74.0, < 0.78.1 is affected

References

Problem Types

CWE-367: Time-of-check Time-of-use (TOCTOU) Race Condition CWE
CWE-732: Incorrect Permission Assignment for Critical Resource CWE