CVE-2026-54327

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

State: Published
Severity: 2.2 Low
Published: Jun 23, 2026
Updated: Jun 26, 2026
Reserved: Jun 12, 2026

Description

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.

Scores

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

Weaknesses

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

Affected Products

Product	Versions
piearendil-works	>= 0.74.0, < 0.78.1Affected

References

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