CVE-2025-50481 Mezzanine CMS vulnerable to Cross-site Scripting
Attackers can execute arbitrary scripts in Mezzanine CMS by injecting payloads into blog posts, potentially compromising user sessions.
- 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
- None listed
What is CVE-2025-50481?
CVE-2025-50481 is a medium-severity cross-site scripting vulnerability in n/a, published on 23 Jul 2025. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link.
Official description
A cross-site scripting (XSS) vulnerability in the component /blog/blogpost/add of Mezzanine CMS v6.1.0 allows attackers to execute arbitrary web scripts or HTML via injecting a crafted payload into a blog post.
Weakness: CWE-79
Which versions are affected by CVE-2025-50481?
3 open source packages ship an affected version, including mezzanine and Mezzanine. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
mezzanine PyPI | All versions to 6.1.0 | None |
mezzanine PyPI | All versions to 6.1.0 | None |
Mezzanine PyPI | All versions to 6.1.0 | None |
Products include Jupo Mezzanine.
How do I fix CVE-2025-50481?
No fix has been published for CVE-2025-50481 yet. Limit exposure of the affected software until one is available.
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-2025-50481 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-50481 exists.
Public exploit code: 1 Exploit-DB entry and 1 proofs of concept on GitHub.
Other vulnerabilities in n/a
- 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-2025-6050 Stored Cross-Site Scripting (XSS) in Mezzanine CMS Admin Interface
Sources
Also known as GHSA-269j-37ww-cmh3, PYSEC-2025-137.