CVE-2026-8885 is a stored cross-site scripting vulnerability in the DeMomentSomTres Shortcodes WordPress plugin (marcqueralt) affecting all versions up to and including 1.1.1. The issue is due to improper neutralization of input in the 'width' and 'align' attributes of the 'callout' shortcode, which are concatenated directly into an HTML style attribute without sufficient sanitization or escaping. Authenticated attackers with contributor-level permissions or higher can exploit this to inject arbitrary JavaScript that executes in the context of users viewing the compromised pages.

An attacker with contributor-level or higher access can inject persistent malicious scripts into pages using the vulnerable shortcode attributes. This can lead to unauthorized actions performed in the context of other users, data theft, or session hijacking. The vulnerability does not affect availability but impacts confidentiality and integrity. No known exploits in the wild have been reported.

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, restrict contributor-level access and above to trusted users only. Avoid using the 'callout' shortcode with untrusted input. Monitor for plugin updates from the vendor and apply them promptly once released.