What is CVE-2025-51487?

CVE-2025-51487 is a medium-severity vulnerability in Moonshine, classified under Cross-site Scripting. CVSS score: 4.5/10. Published 2025-08-19.

How severe is CVE-2025-51487?

Medium severity. CVSS v3 base score is 4.5 out of 10.

Is CVE-2025-51487 known to be exploited?

2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

XSS in Moonshine

CVE-2025-51487

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.

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.004 (36.0th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 4.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:N/A:N.

Affected products

Moonshine
N/a — versions n/a

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

Public proof-of-concept exploits

References

cve@mitre.org (Product)
cve@mitre.org (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2025-51487?: CVE-2025-51487 is a medium-severity vulnerability in Moonshine, classified under Cross-site Scripting. CVSS score: 4.5/10. Published 2025-08-19.
How severe is CVE-2025-51487?: Medium severity. CVSS v3 base score is 4.5 out of 10.
Is CVE-2025-51487 known to be exploited?: 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.