CVE-2025-27400

Admin script execution via unescaped skin URL

Published Feb 28, 2025 · Updated Aug 26, 2025

Stored XSS in OpenMage LTS before 20.12.3 allows remote authenticated users to execute scripts against authenticated administrators. The Design > Themes > Skin (Images / CSS) field accepts an end-script tag, and Mage_Core_Model_Design_Package::getSkinBaseUrl places the resulting path into admin-page output without HTML escaping. An attacker needs administrator-level configuration access, and another authenticated administrator must load the affected admin interface.

CVSS severity2.9
Low
EPSS probability0.26%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Stored XSS in OpenMage LTS before 20.12.3 allows remote authenticated users to execute scripts against authenticated administrators. The Design > Themes > Skin (Images / CSS) field accepts an end-script tag, and Mage_Core_Model_Design_Package::getSkinBaseUrl places the resulting path into admin-page output without HTML escaping. An attacker needs administrator-level configuration access, and another authenticated administrator must load the affected admin interface.

The record

CVE
CVE-2025-27400
Published
Feb 28, 2025
Updated
Aug 26, 2025
Vendor
OpenMage
Product
OpenMage LTS
Classifications
CWE-79, T1059.007
Attack vector
adjacent
Privileges
admin

Timeline

How it unfolded

  1. Feb 28, 2025CVE publishedPublication date reported by the CVE source.
  2. Aug 26, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=< 20.12.3

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesadmin

What is affected?

OpenMage · OpenMage LTSversion=< 20.12.3

Published CVSS scores

2.9GitHub, Inc.CVSS:3.1/AV:A/AC:H/PR:H/UI:R/S:U/C:N/I:L/A:L

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)
Vectoradjacent
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1059.007Command and Scripting Interpreter: JavaScript/JScript

Public exploit references

No public exploit references are available in this record.

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

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo