High 8.5Published Jul 15, 2026

CVE-2026-61828nixos/mysql : `services.mysql` is configured with insecure authentication by default when used with `mysql` or `percona-server`

Updated under an hour ago (Oct 27, 2026, 3:50 AM ET)

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It affects NixOS nixpkgs. Add what you run to find out whether that includes you.

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Every CVE for NixOS nixpkgs

Exploited in the last 30 days

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.

CVSS: 8.5 HIGH (v4.0, CNA)CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Weakness (CWE): CWE-276
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: GitHub_M
NVD analysis: Deferred
Record last updated: Jul 15, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

NixOS nixpkgs nixos:nixpkgs (from the name)	before 25.11; from 26.05-beta, < 26.05	CNA record

References

References

https://github.com/NixOS/nixpkgs/security/advisories/GHSA-6qxx-6rg8-c4p8	x-refsource-confirm
https://github.com/NixOS/nixpkgs/pull/534254	x-refsource-misc
https://github.com/NixOS/nixpkgs/pull/534482	x-refsource-misc
https://github.com/NixOS/nixpkgs/pull/534484	x-refsource-misc
https://github.com/NixOS/nixpkgs/commit/3f68d7ad2a6865ff8b4910d89f173d7258bad8dd	x-refsource-misc
https://github.com/NixOS/nixpkgs/commit/4aed47116a8734922763cd8f477467b0a0bcd6d7	x-refsource-misc
https://github.com/NixOS/nixpkgs/commit/f8ee41468a7a8f9ed3a8cc7d017151c2ca6f90b5	x-refsource-misc

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.