CVE-2026-8895 is a stored cross-site scripting vulnerability in the kk blog card WordPress plugin affecting all versions before 1.4. The issue stems from improper neutralization of input in the 'href' and 'type' attributes of the 'blog-card' shortcode, which are concatenated directly into HTML attributes without proper sanitization or escaping. This allows authenticated users with contributor-level permissions or higher to inject arbitrary JavaScript that executes in the context of any user viewing the compromised page. The vulnerability is classified under CWE-79 and has a CVSS 3.1 base score of 6.4, indicating medium severity. No official patch or remediation has been documented as of the published date.

An attacker with contributor-level or higher access can inject persistent malicious scripts into pages via the vulnerable shortcode attributes. These scripts execute in the browsers of users who visit the infected pages, potentially leading to session hijacking, defacement, or other client-side attacks. The vulnerability does not affect availability but impacts confidentiality and integrity of user sessions and data.

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, restrict contributor-level access to trusted users only and consider disabling or removing the kk blog card plugin if possible to prevent exploitation.