CVE-2026-44888

Unauthenticated RCE via Python Config File Injection in SaveConfigFile() (Interger)

State: Published
Severity: 9.8 Critical
Published: May 27, 2026
Updated: May 28, 2026
Reserved: May 7, 2026

Description

Pi.Alert is a WIFI / LAN intruder detector with web service monitoring. Prior to 2026-05-07, Pi.Alert's SaveConfigFile() endpoint writes user-supplied numeric config values (e.g., SMTP_PORT) directly into pialert.conf without validation. Since pialert.conf is loaded via Python's exec() every 3–5 minutes by the background cron process, an attacker can inject arbitrary Python code and achieve unauthenticated OS-level RCE. On default installations (PIALERT_WEB_PROTECTION = False), no credentials are required. This vulnerability is fixed in 2026-05-07.

Scores

CVSS	Score	Vector	Source
3.1	9.8 Critical	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H	GitHub_M

Weaknesses

CWE-94 Improper Control of Generation of Code ('Code Injection')

Affected Products

Product	Versions
Pi.Alertleiweibau	< 2026-05-07Affected

References

https://github.com/leiweibau/Pi.Alert/security/advisories/GHSA-xg85-f8qw-7c5f

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