The Breadcrumb WordPress plugin before 1.5.33 does not validate and escape some of its shortcode attributes before outputting them back in the page, which could allow users with a role as low as contributor to perform Stored Cross-Site Scripting attacks which could be used against high privilege users such as admins.

References

• https://nvd.nist.gov/vuln/detail/CVE-2022-4836
• https://wpscan.com/vulnerability/e9a228dc-d32e-4918-898d-4d7af4662a14