CVE Catalog

CVE-2026-61828

HighCVSS 8.5
Published: Updated: Translated: NVD NIST

Exploitation Probability (EPSS)

Low risk
0.11%

1th percentile - higher than 1% of all known CVEs

Summary

A vulnerability in Nixpkgs affects the MySQL services.mysql module, which initializes the MySQL database in a way that allows local users (e.g., unprivileged CGI processes) to log in as root without a password. The issue occurs with mysql or percona-server and is fixed in channels 25.11 and 26.05.

Risk Assessment

The risk involves unauthorized local access to the MySQL database with root privileges, potentially leading to data confidentiality and integrity breaches as well as privilege escalation on the host system.

Recommendation

Immediately update Nixpkgs to version 25.11 or 26.05, which contain the fix. In the meantime, restrict local access to the MySQL server and monitor logs for suspicious login attempts.

Related vulnerabilities

Original NVD description (English source)

Nixpkgs is a collection of software packages that can be installed with the Nix package manager. Prior to the 25.11 and 26.05 channel fixes, the NixOS module for MySQL services.mysql initializes the MySQL database in a way that allows local users, such as unprivileged web or CGI processes on the same host, to log in as the root user without a password when the service is used with mysql or percona-server. This issue is fixed in the 25.11 and 26.05.

Vulnerability data from NVD (NIST) · CISA KEV · EPSS