CVE-2026-12731 is a stored cross-site scripting vulnerability in the weDocs: AI Powered Knowledge Base, Docs, Documentation, Wiki & AI Chatbot WordPress plugin. The flaw exists in the handling of 'sectionTitleTag' and 'articleTitleTag' block attributes, allowing authenticated users with contributor-level privileges or above to inject arbitrary web scripts. These scripts execute in the context of users who access the compromised pages. The vulnerability affects all versions up to and including 2.3.0 due to inadequate input sanitization and output escaping. The CVSS 3.1 base score is 6.4, reflecting a medium severity with network attack vector, low attack complexity, and privileges required at the contributor level.

Successful exploitation allows authenticated contributors or higher to inject persistent malicious scripts into pages, which execute in the browsers of users viewing those pages. This can lead to theft of user credentials, session hijacking, or other actions performed with the victim's privileges. The vulnerability does not impact availability but affects confidentiality and integrity.

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 disabling or limiting use of the affected block attributes. Monitor for plugin updates from wedevs addressing this issue.