CVE-2026-6247 is a stored cross-site scripting vulnerability in the scratchblocks for WP WordPress plugin, affecting all versions up to and including 1.0.1. The vulnerability is due to improper neutralization of input in the 'element' attribute of the 'scratchblocks' shortcode, allowing authenticated users with contributor-level privileges or higher to inject arbitrary web scripts. These scripts execute in the context of any user viewing the injected page, potentially leading to session hijacking or other script-based attacks. The CVSS 3.1 score of 6.4 reflects a medium severity with network attack vector and low complexity, requiring privileges but no user interaction. No patch or official remediation is currently documented.

An attacker with contributor-level or higher access can inject persistent malicious scripts into pages via the vulnerable shortcode attribute. These scripts execute in the browsers of users who view the compromised pages, potentially leading to information disclosure or session hijacking. The vulnerability does not impact availability and requires authenticated access, limiting the attack surface. No known active exploitation has been reported.

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, restrict contributor-level access to trusted users only and consider removing or disabling the scratchblocks for WP plugin if feasible. Monitor for updates from the vendor and apply patches promptly once available.