CVE-2025-51489: moonshine XSS — Exploit

Description

A Stored Cross-Site Scripting (XSS) vulnerability exists in MoonShine version < 3.12.5, allowing remote attackers to upload a malicious SVG file when creating/updating an Article and correctly execute arbitrary JavaScript when the file link is opened.

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CVSS v3.1 Score

5.4

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Weakness Type (CWE)

CWE-79 Cross-site Scripting (XSS)

CWE-434 Unrestricted Upload

Affected Products

Vendor	Product	Versions
moonshine	moonshine	< 3.12.5

References

Exploits

https://github.com/GiacoLenzo2109/MoonShine_Software_PoCs

Other References

https://github.com/moonshine-software/moonshine

Frequently Asked Questions

What is CVE-2025-51489? +

A Stored Cross-Site Scripting (XSS) vulnerability exists in MoonShine version < 3.12.5, allowing remote attackers to upload a malicious SVG file when creating/updating an Article and correctly execute arbitrary JavaScript when the file link is opened. It has a CVSS v3.1 base score of 5.4 (MEDIUM).

How severe is CVE-2025-51489? +

CVE-2025-51489 has a CVSS v3.1 score of 5.4 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.

What products are affected by CVE-2025-51489? +

CVE-2025-51489 affects products from moonshine, specifically: moonshine. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2025-51489? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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CVE-2025-51489