CVE-2026-25784 Hallo Welt! GmbH BlueSpice - Privilege Escalation

Hallo Welt! GmbH BlueSpice 5.2.3 to before 5.2.7 and 5.2.7 container images before 2026-10-19 contain a privilege escalation caused by insecure default value of $mwsgTokenAuthenticatorServiceCIDR in LocalSettings.php, letting any user with read access obtain sysop session tokens via REST API, exploit requires publicly readable wiki.

CVSS base score 9.8 /10
Critical
CISA KEV
Not listed
Public exploit
None known
Authentication
Not required
EPSS
0.34% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Privilege Escalation
Impact
Privilege Escalation
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Published
23 October 2026
Updated
25 October 2026
Weakness
CWE-269

Vendor fix

Update to BlueSpice version 5.2.7 after 2026-10-19 or later.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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