CVE-2026-25784 Initialization of a Resource with an Insecure Default vulnerability in Hallo Welt!
- Exploited in the wild
- Not known
- Fix
- None listed
What is CVE-2026-25784?
CVE-2026-25784 is a critical vulnerability in Hallo Welt! GmbH BlueSpice, published on 23 Oct 2026.
Official description
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.
Which versions are affected by CVE-2026-25784?
How do I fix CVE-2026-25784?
No fix has been published for CVE-2026-25784 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-25784 being exploited?
There is no known exploitation of CVE-2026-25784 in the wild and no public exploit code.
Sources
Also known as GHSA-xrr7-cjx6-x9j2.