The vulnerability CVE-2024-54354 affects beat.k Termin-Kalender up to version 0.99.47. It is caused by missing authorization checks, which permit stored cross-site scripting (XSS) attacks. The CVSS 3.1 base score is 6.5, reflecting a network attack vector with low attack complexity, requiring privileges and user interaction, and resulting in partial confidentiality, integrity, and availability impacts. There is no indication of known exploits in the wild or vendor-provided patches at this time.

Successful exploitation of this vulnerability could allow an attacker with some privileges to inject malicious scripts that are stored and executed in the context of other users. This may lead to partial disclosure of information, modification of data, or disruption of service. The impact is rated medium based on the CVSS score and described effects.

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, users should limit privileges to trusted users and apply standard XSS mitigations where possible. Monitor vendor channels for updates or patches addressing this issue.