# CVE-2026-54327: Pi: Race condition in auth.json writes could expose stored credentials

> A race condition in Pi's credential storage allows local attackers to read API keys and OAuth tokens during file write operations.

- **Severity:** Low 2.2 (`CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:L/I:N/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Local or same network only
- **Victim action needed:** A user has to click or open something
- **Fix available:** Yes
- **Published:** 23 Jun 2026
- **Updated:** 26 Jun 2026
- **Also known as:** GHSA-r95r-rj6r-c39x, MINI-6cq8-pppp-94wq

## What is CVE-2026-54327?

CVE-2026-54327 is a low-severity vulnerability in earendil-works pi, published on 23 Jun 2026. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.

### Official 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.

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

## Which versions are affected by CVE-2026-54327?

4 open source packages ship an affected version, including @earendil-works/pi-coding-agent and @mariozechner/pi-coding-agent.


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `@earendil-works/pi-coding-agent` | npm | From 0.74.0 | 0.78.1 |
| `@earendil-works/pi-coding-agent` | npm | From 0.74.0 | 0.78.1 |
| `@mariozechner/pi-coding-agent` | npm | From 0.28.0 to 0.73.1 | None |
| `@mariozechner/pi-coding-agent` | npm | From 0.28.0 to 0.73.1 | None |

## How do I fix CVE-2026-54327?

Upgrade @earendil-works/pi-coding-agent to 0.78.1 or later.

## Is CVE-2026-54327 being exploited?

There is no known exploitation of CVE-2026-54327 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-54327 and fix it if it is affected.

What it is: CVE-2026-54327 is a low-severity vulnerability in earendil-works pi, published on 23 Jun 2026. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2026-54327 in the wild and no public exploit code.

Affected packages and fixed versions:
- @earendil-works/pi-coding-agent (npm): affected from 0.74.0; fixed in 0.78.1
- @earendil-works/pi-coding-agent (npm): affected from 0.74.0; fixed in 0.78.1
- @mariozechner/pi-coding-agent (npm): affected from 0.28.0 up to 0.73.1; no fix listed
- @mariozechner/pi-coding-agent (npm): affected from 0.28.0 up to 0.73.1; no fix listed

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2026-54327/ (Markdown: https://insights.sbomify.com/CVE-2026-54327/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-54327
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-54327
- OSV: https://osv.dev/vulnerability/CVE-2026-54327

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-54327/
Summaries are generated and may contain mistakes; the official description above is the record.