Vulnerability · Published May 27, 2026 · Assigned by GitHub_M

CVE-2026-44888Unauthenticated RCE via Python Config File Injection in SaveConfigFile() (Interger)

Critical 9.8

In plain English

A critical-severity code injection in Pi.Alert from leiweibau. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 33% of all known vulnerabilities).

Severity (CVSS 3.1)9.8Critical

Exploit odds (30 days)0.4%top 66.7% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official 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.

Affected products (as reported)

Vendor	Product	Versions
leiweibau	Pi.Alert	< 2026-05-07

Weakness: CWE-94 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References

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