This vulnerability, identified as CWE-79, affects Surbma | Yoast SEO Breadcrumb Shortcode up to version 1.2. It allows contributor-level users to perform cross-site scripting attacks by injecting malicious input that is not properly sanitized during web page generation. The CVSS 3.1 base score is 6.5, reflecting network attack vector, low attack complexity, required privileges at contributor level, user interaction needed, and impacts on confidentiality, integrity, and availability with low to partial scope changes. No vendor advisory or patch information is provided, and no known exploits are reported in the wild.

Successful exploitation can lead to execution of arbitrary scripts in the context of affected users, potentially resulting in partial disclosure of sensitive information, modification of content, or disruption of service. The attack requires contributor privileges and user interaction, limiting the attack surface to some extent. The vulnerability affects confidentiality, integrity, and availability to a limited degree.

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, restrict contributor privileges where possible and apply input validation or sanitization controls at the application level if feasible. Monitor for updates from the vendor regarding patches or official mitigations.