Vulnerability · Published Jun 17, 2025 · Assigned by Checkmarx
CVE-2025-6050Stored Cross-Site Scripting (XSS) in Mezzanine CMS Admin Interface
Medium 4.8
In plain English
A medium-severity cross-site scripting in mezzanine from jupo. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 25% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official description
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 packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| PyPI | mezzanine | 6.1.1 | GHSA-7pr5-w74r-jjj7 |
| PyPI | mezzanine | 6.1.1 | PYSEC-2025-236 |
Affected products (as reported)
Weakness: CWE-79 · Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:L/VI:L/VA:N/SC:L/SI:N/SA:N