Initialization of a Resource with an Insecure Default vulnerability in Hallo Welt! GmbH BlueSpice (container image bluespice/wiki) allows privilege escalation. The default value of $mwsgTokenAuthenticatorServiceCIDR in the container's LocalSettings.php was intended to restrict internal service authentication to the container network, but evaluated to an empty string when the environment variable WIKI_SERVICE_TOKEN_AUTH_ALLOWED was not set. An empty value disables the IP restriction in the token authenticator component (mwstake/mediawiki-component-token-authenticator). As a result, any user with read access to the wiki (anonymous users on publicly readable wikis) could obtain an application token from the REST API and use it to get a session with sysop privileges as the internal service user.
This issue affects BlueSpice: from 5.2.3 before 5.2.7, and the 5.2.7 container images published before 2026-10-19 15:37 UTC.
{
"unresolved_ranges": [
{
"extracted_events": [
{
"range": [
{
"fixed": "2026-10-19"
}
],
"source": "DESCRIPTION"
}
]
}
]
}{
"extracted_events": [
{
"range": [
{
"introduced": "5.2.3"
},
{
"fixed": "5.2.7"
}
],
"source": "DESCRIPTION"
},
{
"range": [
{
"fixed": "04b840be565b508f6e741c376970909b69d2a444"
}
],
"source": "REFERENCES_COMMIT"
}
]
}