CVE-2025-11129 is a stored cross-site scripting vulnerability (CWE-79) in the Include Fussball.de Widgets WordPress plugin. It affects all versions up to 4.0.0 due to improper neutralization of input during web page generation. Specifically, the 'api' and 'type' parameters are not properly sanitized or escaped, allowing authenticated users with Contributor-level permissions or higher to inject malicious scripts. These scripts execute in the context of users who access the injected pages, potentially leading to information disclosure or session hijacking. The vulnerability has a CVSS 3.1 base score of 6.4 (AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N), reflecting network attack vector, low attack complexity, required privileges, no user interaction, and partial impact on confidentiality and integrity.

An attacker with Contributor-level access or higher can inject persistent malicious scripts into pages using the vulnerable parameters. These scripts execute in the browsers of users who view the compromised pages, potentially leading to partial confidentiality and integrity loss such as theft of user data or unauthorized actions performed on behalf of users. There is no impact on availability. No known exploits have been reported in the wild.

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, restrict Contributor-level access to trusted users only and consider disabling or removing the Include Fussball.de Widgets plugin if possible. Monitor official vendor channels for updates and apply any released patches promptly.