CVE-2025-51487 moonshine Stored Cross-Site Scripting Vulnerability in Create Article
Attackers can execute arbitrary JavaScript via stored XSS in the CutCode Link parameter when creating or updating articles.
- 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-2025-51487?
CVE-2025-51487 is a medium-severity cross-site scripting vulnerability in n/a, published on 19 Aug 2025. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link.
Official description
A Stored Cross-Site Scripting (XSS) vulnerability exists in MoonShine version < 3.12.5, allowing to execute arbitrary JavaScript by using "javascript:" payload, instead of the expected HTTPS protocol, in the CutCode Link parameter when creating/updating a new Article.
Weakness: CWE-79
Which versions are affected by CVE-2025-51487?
2 open source packages ship an affected version, including moonshine/moonshine. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
moonshine/moonshine Packagist | All versions | 3.12.4 |
moonshine/moonshine Packagist | All versions | 3.12.4 |
Products include Moonshine Moonshine.
How do I fix CVE-2025-51487?
Upgrade moonshine/moonshine to 3.12.4 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-2025-51487 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-51487 exists.
Other vulnerabilities in n/a
Sources
Also known as GHSA-p632-58pp-c9xg.