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

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Summary

CVECVE-2026-54327
StatePUBLISHED
AssignerGitHub_M
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-06-23 20:16:49 UTC
Updated2026-06-23 20:16:49 UTC
DescriptionPi 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.

Risk And Classification

Primary CVSS: v3.1 2.2 LOW from [email protected]

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

EPSS: 0.000740000 probability, percentile 0.001020000 (date 2026-06-24)

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

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary2.2LOWCVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:L/I:N/A:N
3.1CNADECLARED2.2LOWCVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:L/I:N/A:N

CVSS v3.1 Breakdown

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

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

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Earendil-works Pi affected >= 0.74.0, < 0.78.1 Not specified

References

ReferenceSourceLinkTags
github.com/earendil-works/pi/releases/tag/v0.78.1 [email protected] github.com
github.com/earendil-works/pi/security/advisories/GHSA-r95r-rj6r-c39x [email protected] github.com
github.com/earendil-works/pi/commit/135fb545f99106a4a249274f129b90bc0a77... [email protected] github.com
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