CVE-2025-6050 Stored Cross-Site Scripting (XSS) in Mezzanine CMS Admin Interface
An authenticated admin can inject malicious scripts via blog titles, leading to script execution in other admins' browsers.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2025-6050?
CVE-2025-6050 is a medium-severity cross-site scripting vulnerability in jupo mezzanine, published on 17 Jun 2025. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link.
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.
Weakness: CWE-79
Which versions are affected by CVE-2025-6050?
3 open source packages ship an affected version, including mezzanine and Mezzanine. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
mezzanine PyPI | All versions | 6.1.1 |
mezzanine PyPI | All versions | 6.1.1 |
Mezzanine PyPI | All versions | 6.1.1 |
Products include Jupo Mezzanine.
How do I fix CVE-2025-6050?
Upgrade mezzanine to 6.1.1 or later.
Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.
Is CVE-2025-6050 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-6050 exists.
Other vulnerabilities in jupo mezzanine
- CVE-2024-25169 Mezzanine allows attackers to bypass access control mechanisms
- CVE-2024-25170 Mezzanine allows attackers to bypass access controls via manipulating the Host header
- CVE-2025-29573 Mezzanine CMS Cross-Site Scripting (XSS) vulnerability
- CVE-2020-19002 Mezzanine Cross Site Scripting (XSS) vulnerability
- CVE-2025-50481 Mezzanine CMS vulnerable to Cross-site Scripting
Sources
Also known as GHSA-7pr5-w74r-jjj7, PYSEC-2025-236.