Manual:$wgPasswordPolicy

Users: $wgPasswordPolicy
Specifies various settings related to password strength and security.
Introduced in version:	1.26.0 (Gerrit change 206156; git #1a20dc)
Removed in version:	still in use
Allowed values:	see below
Default value:	see below
Other settings: Alphabetical | By function

Details

A password policy is of the form

$wgPasswordPolicy = [
    'policies' => [
        'group1' => [
            'check1' => 'value1',
            // ...
        ],
        // ...
    ],
    'checks' => [
        'check1' => 'callable1',
        // ...
    ],
];

• group1 etc. are user groups, plus the special group default which is required to be present and applies to everyone.
• check1 etc. are arbitrary check names, defined in the checks subarray. If the same check applies to a user via multiple groups, it will be applied with the max() of the values.
• callable1 etc. are PHP callables, which receive three arguments: the defined value, the User object and the password, and return a StatusValue. A fatal status means the password can't be used, even for login; a non-fatal error means the value is not accepted as a new password (on account creation or password change), but can be used for login; the user will be shown a (skippable) password change form. Default checks (found in includes/password/PasswordPolicyChecks.php):
  • MinimalPasswordLength - Minimum length a user can set
  • MinimumPasswordLengthToLogin - Passwords shorter than this will not be allowed to login, regardless if it is correct.
  • MaximalPasswordLength - Maximum length password a user is allowed to attempt. Prevents DoS attacks with pbkdf2.
  • PasswordCannotMatchUsername - Password cannot match username
  • PasswordCannotMatchBlacklist - Blacklists some passwords which have been used by MediaWiki unit tests in the past.
  • PasswordCannotBePopular - Blacklist passwords which are known to be commonly chosen. Set to integer n to ban the top n passwords. If you want to ban all common passwords on file, use the PHP_INT_MAX constant. See also $wgPopularPasswordFile (the default file comes with MediaWiki and has 10K passwords).
  • PasswordNotInLargeBlacklist - Same as the previous one, except uses the larger blacklist that comes with the wikimedia/password-blacklist library.

Examples

This example shows how to change selected policies for all users:

$wgPasswordPolicy['policies']['default']['MinimalPasswordLength'] = 10;
$wgPasswordPolicy['policies']['default']['MaximalPasswordLength'] = 128;
$wgPasswordPolicy['policies']['default']['PasswordCannotBePopular'] = 100;
$wgPasswordPolicy['policies']['default']['PasswordCannotMatchUsername'] = true;

This example shows how to change selected policies for users of the "sysop" group:

$wgPasswordPolicy['policies']['sysop']['MinimumPasswordLengthToLogin'] = 10;
$wgPasswordPolicy['policies']['sysop']['MinimalPasswordLength'] = 20;

Default

MediaWiki version:

≥ 1.33

$wgPasswordPolicy = [
	'policies' => [
		'bureaucrat' => [
			'MinimalPasswordLength' => 10,	// 1.33+
			'MinimumPasswordLengthToLogin' => 1,
			'PasswordNotInLargeBlacklist' => true,	// 1.33+
		],
		'sysop' => [
			'MinimalPasswordLength' => 10,	// 1.33+
			'MinimumPasswordLengthToLogin' => 1,
			'PasswordNotInLargeBlacklist' => true,	// 1.33+
		],
		'interface-admin' => [	// 1.32+
			'MinimalPasswordLength' => 10,	// 1.33+
			'MinimumPasswordLengthToLogin' => 1,
			'PasswordNotInLargeBlacklist' => true,	// 1.33+
		],
		'bot' => [
			'MinimalPasswordLength' => 10,	// 1.33+
			'MinimumPasswordLengthToLogin' => 1,
			'PasswordNotInLargeBlacklist' => true,	// 1.33+
		],
		'default' => [
			'MinimalPasswordLength' => [ 'value' => 1, 'suggestChangeOnLogin' => true ],	// 1.33+
			'PasswordCannotMatchUsername' => [ 'value' => true, 'suggestChangeOnLogin' => true ],	// 1.33+
			'PasswordCannotMatchBlacklist' => [ 'value' => true, 'suggestChangeOnLogin' => true ],	// 1.33+
			'MaximalPasswordLength' => [ 'value' => 4096, 'suggestChangeOnLogin' => true ],	// 1.33+
		],
	],
	'checks' => [
		'MinimalPasswordLength' => 'PasswordPolicyChecks::checkMinimalPasswordLength',
		'MinimumPasswordLengthToLogin' => 'PasswordPolicyChecks::checkMinimumPasswordLengthToLogin',
		'PasswordCannotMatchUsername' => 'PasswordPolicyChecks::checkPasswordCannotMatchUsername',
		'PasswordCannotMatchBlacklist' => 'PasswordPolicyChecks::checkPasswordCannotMatchBlacklist',
		'MaximalPasswordLength' => 'PasswordPolicyChecks::checkMaximalPasswordLength',
		'PasswordCannotBePopular' => 'PasswordPolicyChecks::checkPopularPasswordBlacklist',	// 1.27+
		'PasswordNotInLargeBlacklist' => 'PasswordPolicyChecks::checkPasswordNotInLargeBlacklist',	// 1.33+
	],
];

MediaWiki version:

1.32

$wgPasswordPolicy = [
	'policies' => [
		'bureaucrat' => [
			'MinimalPasswordLength' => 8,
			'MinimumPasswordLengthToLogin' => 1,
			'PasswordCannotMatchUsername' => true,
			'PasswordCannotBePopular' => 25,	// 1.27+
		],
		'sysop' => [
			'MinimalPasswordLength' => 8,
			'MinimumPasswordLengthToLogin' => 1,
			'PasswordCannotMatchUsername' => true,
			'PasswordCannotBePopular' => 25,	// 1.27+
		],
		'interface-admin' => [	// 1.32+
			'MinimalPasswordLength' => 8,
			'MinimumPasswordLengthToLogin' => 1,
			'PasswordCannotMatchUsername' => true,
			'PasswordCannotBePopular' => 25,
		],
		'bot' => [
			'MinimalPasswordLength' => 8,
			'MinimumPasswordLengthToLogin' => 1,
			'PasswordCannotMatchUsername' => true,
		],
		'default' => [
			'MinimalPasswordLength' => 1,
			'PasswordCannotMatchUsername' => true,
			'PasswordCannotMatchBlacklist' => true,
			'MaximalPasswordLength' => 4096,
		],
	],
	'checks' => [
		'MinimalPasswordLength' => 'PasswordPolicyChecks::checkMinimalPasswordLength',
		'MinimumPasswordLengthToLogin' => 'PasswordPolicyChecks::checkMinimumPasswordLengthToLogin',
		'PasswordCannotMatchUsername' => 'PasswordPolicyChecks::checkPasswordCannotMatchUsername',
		'PasswordCannotMatchBlacklist' => 'PasswordPolicyChecks::checkPasswordCannotMatchBlacklist',
		'MaximalPasswordLength' => 'PasswordPolicyChecks::checkMaximalPasswordLength',
		'PasswordCannotBePopular' => 'PasswordPolicyChecks::checkPopularPasswordBlacklist'	// 1.27+
	],
];

MediaWiki versions:

1.27 – 1.31

$wgPasswordPolicy = [
	'policies' => [
		'bureaucrat' => [
			'MinimalPasswordLength' => 8,
			'MinimumPasswordLengthToLogin' => 1,
			'PasswordCannotMatchUsername' => true,
			'PasswordCannotBePopular' => 25,	// 1.27+
		],
		'sysop' => [
			'MinimalPasswordLength' => 8,
			'MinimumPasswordLengthToLogin' => 1,
			'PasswordCannotMatchUsername' => true,
			'PasswordCannotBePopular' => 25,	// 1.27+
		],
		'bot' => [
			'MinimalPasswordLength' => 8,
			'MinimumPasswordLengthToLogin' => 1,
			'PasswordCannotMatchUsername' => true,
		],
		'default' => [
			'MinimalPasswordLength' => 1,
			'PasswordCannotMatchUsername' => true,
			'PasswordCannotMatchBlacklist' => true,
			'MaximalPasswordLength' => 4096,
		],
	],
	'checks' => [
		'MinimalPasswordLength' => 'PasswordPolicyChecks::checkMinimalPasswordLength',
		'MinimumPasswordLengthToLogin' => 'PasswordPolicyChecks::checkMinimumPasswordLengthToLogin',
		'PasswordCannotMatchUsername' => 'PasswordPolicyChecks::checkPasswordCannotMatchUsername',
		'PasswordCannotMatchBlacklist' => 'PasswordPolicyChecks::checkPasswordCannotMatchBlacklist',
		'MaximalPasswordLength' => 'PasswordPolicyChecks::checkMaximalPasswordLength',
		'PasswordCannotBePopular' => 'PasswordPolicyChecks::checkPopularPasswordBlacklist'	// 1.27+
	],
];

MediaWiki version:

1.26

$wgPasswordPolicy = array(
	'policies' => array(
		'bureaucrat' => array(
			'MinimalPasswordLength' => 8,
			'MinimumPasswordLengthToLogin' => 1,
			'PasswordCannotMatchUsername' => true,
		),
		'sysop' => array(
			'MinimalPasswordLength' => 8,
			'MinimumPasswordLengthToLogin' => 1,
			'PasswordCannotMatchUsername' => true,
		),
		'bot' => array(
			'MinimalPasswordLength' => 8,
			'MinimumPasswordLengthToLogin' => 1,
			'PasswordCannotMatchUsername' => true,
		),
		'default' => array(
			'MinimalPasswordLength' => 1,
			'PasswordCannotMatchUsername' => true,
			'PasswordCannotMatchBlacklist' => true,
			'MaximalPasswordLength' => 4096,
		),
	),
	'checks' => array(
		'MinimalPasswordLength' => 'PasswordPolicyChecks::checkMinimalPasswordLength',
		'MinimumPasswordLengthToLogin' => 'PasswordPolicyChecks::checkMinimumPasswordLengthToLogin',
		'PasswordCannotMatchUsername' => 'PasswordPolicyChecks::checkPasswordCannotMatchUsername',
		'PasswordCannotMatchBlacklist' => 'PasswordPolicyChecks::checkPasswordCannotMatchBlacklist',
		'MaximalPasswordLength' => 'PasswordPolicyChecks::checkMaximalPasswordLength',
	),
);

See also

• $wgPasswordDefault
• $wgPasswordConfig