CVE-2025-51487Public exploitNetwork attack vector

Stored script execution via unsafe CutCode links

Published Aug 19, 2025 · Updated Aug 20, 2025

Stored XSS in MoonShine before 3.12.5 allows remote authenticated users to execute JavaScript through a crafted article link. The CutCode Link field accepts and persists a javascript URI as a rendered link without enforcing the expected HTTPS scheme. Article-creation privileges and a victim who clicks the stored link are required; script execution occurs in that victim's MoonShine browser context.

CVSS severity4.5
Medium
EPSS probability0.43%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stored XSS in MoonShine before 3.12.5 allows remote authenticated users to execute JavaScript through a crafted article link. The CutCode Link field accepts and persists a javascript URI as a rendered link without enforcing the expected HTTPS scheme. Article-creation privileges and a victim who clicks the stored link are required; script execution occurs in that victim's MoonShine browser context.

The record

CVE
CVE-2025-51487
Published
Aug 19, 2025
Updated
Aug 20, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-79, T1204.001
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Aug 19, 2025CVE publishedPublication date reported by the CVE source.
  2. Aug 20, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

4.5CISA-ADPCVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesadmin
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1204.001User Execution: Malicious Link

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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