CVE-2026-61828Public exploit

Local MySQL root access via passwordless authentication

Published Jul 15, 2026 · Updated Jul 15, 2026

Authentication bypass in Nixpkgs before the 25.11 and 26.05 channel fixes allows local users to access MySQL as root without a password. The services.mysql module initializes root@localhost under MySQL or Percona Server without password or UNIX-socket peer authentication. Reachability requires a nondefault server package and unchanged authentication settings; any local account can read, alter, or delete every database.

CVSS severity8.5
High
EPSS probability0.15%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Authentication bypass in Nixpkgs before the 25.11 and 26.05 channel fixes allows local users to access MySQL as root without a password. The services.mysql module initializes root@localhost under MySQL or Percona Server without password or UNIX-socket peer authentication. Reachability requires a nondefault server package and unchanged authentication settings; any local account can read, alter, or delete every database.

The record

CVE
CVE-2026-61828
Published
Jul 15, 2026
Updated
Jul 15, 2026
Vendor
NixOS
Product
Nixpkgs
Classifications
CWE-276, T1078
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jul 15, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 15, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=< 25.11
  2. Affected versionversion=>= 26.05-beta, < 26.05

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

NixOS · Nixpkgsversion=< 25.11; version=>= 26.05-beta, < 26.05

Published CVSS scores

8.5GitHubCVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-276Incorrect Default Permissions
T1078Valid Accounts

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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