CVE-2026-0813 is a stored cross-site scripting vulnerability in the prasannasp Short Link WordPress plugin affecting all versions up to and including 1.0. The vulnerability arises from insufficient sanitization and escaping of input parameters 'short_link_post_title' and 'short_link_page_title', enabling authenticated administrators to inject arbitrary scripts into pages. These scripts execute in the context of users visiting the injected pages, potentially leading to session hijacking or other script-based attacks. The vulnerability requires high privileges (administrator or above) and does not require user interaction beyond visiting the affected page. The CVSS 3.1 base score is 4.4 (medium severity) with attack vector network, high attack complexity, high privileges required, no user interaction, and impacts confidentiality and integrity at a low level.

An attacker with administrator-level access can exploit this vulnerability to inject malicious scripts into pages generated by the Short Link plugin. When other users access these pages, the injected scripts execute in their browsers, potentially compromising user data confidentiality and integrity. The impact is limited by the requirement for high privileges and the absence of availability impact. There are no known exploits in the wild at this time.

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