CVE-2025-6050: Jupo Mezzanine

Medium severity, CVSS 4.8. EPSS: 0.3% chance of exploitation in the next 30 days.

Mezzanine CMS, in versions prior to 6.1.1, contains a Stored Cross-Site Scripting (XSS) vulnerability in the admin interface. The vulnerability exists in the "displayable_links_js" function, which fails to properly sanitize blog post titles before including them in JSON responses served via "/admin/displayable_links.js". An authenticated admin user can create a blog post with a malicious JavaScript payload in the title field, then trick another admin user into clicking a direct link to the "/admin/displayable_links.js" endpoint, causing the malicious script to execute in their browser.

Affected products

• Jupo Mezzanine: before 6.1.1 (fixed in 6.1.1)

Published 2025-06-17. Last modified 2026-06-17.