NEOJAPAN ChatLuck Guest User Sign-up cross site scripting

CVSS Meta Temp Score
CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.
Current Exploit Price (≈)
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CTI Interest Score
Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
5.2$0-$5k0.00

Summaryinfo

A vulnerability identified as problematic has been detected in NEOJAPAN ChatLuck. The affected element is an unknown function of the component Guest User Sign-up. Performing a manipulation results in cross site scripting. This vulnerability is known as CVE-2025-58115. Remote exploitation of the attack is possible. No exploit is available.

Detailsinfo

A vulnerability was found in NEOJAPAN ChatLuck (affected version not known). It has been classified as problematic. This affects some unknown functionality of the component Guest User Sign-up. The manipulation with an unknown input leads to a cross site scripting vulnerability. CWE is classifying the issue as CWE-79. The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. This is going to have an impact on integrity. The summary by CVE is:

ChatLuck contains a cross-site scripting vulnerability in Guest User Sign-up. If exploited, an arbitrary script may be executed on the web browser of the user who is accessing the product.

The advisory is shared at chatluck.com. This vulnerability is uniquely identified as CVE-2025-58115 since 09/02/2025. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. It demands that the victim is doing some kind of user interaction. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1059.007 for this issue.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2025-34737). Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Type

Vendor

Name

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA CVSS-B Score: 🔒
CNA CVSS-BT Score: 🔒
CNA Vector: 🔒

CVSSv3info

VulDB Meta Base Score: 5.2
VulDB Meta Temp Score: 5.2

VulDB Base Score: 4.3
VulDB Temp Score: 4.3
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 6.1
CNA Vector (jpcert): 🔒

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Cross site scripting
CWE: CWE-79 / CWE-94 / CWE-74
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Timelineinfo

09/02/2025 CVE reserved
10/16/2025 +44 days Advisory disclosed
10/16/2025 +0 days VulDB entry created
10/16/2025 +0 days VulDB entry last update

Sourcesinfo

Advisory: chatluck.com
Status: Confirmed

CVE: CVE-2025-58115 (🔒)
GCVE (CVE): GCVE-0-2025-58115
GCVE (VulDB): GCVE-100-328785
EUVD: 🔒

Entryinfo

Created: 10/16/2025 11:13
Updated: 10/16/2025 12:22
Changes: 10/16/2025 11:13 (74), 10/16/2025 12:22 (1)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Discussion

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