A vulnerability has been identified in Grimdonkey's Magic the Gathering Card Tooltips plugin, specifically affecting versions up to 3.4.0. This vulnerability allows for improper neutralization of input during web page generation, leading to a Cross-site Scripting (XSS) attack vector. The risk is classified as medium, with a CVSS score of 6.5. This means that organizations using the affected plugin should prioritize addressing this issue to prevent potential exploitation.
Risk to organizations includes unauthorized access to user sessions and the potential for malicious scripts to run in the user's browser. Although no public exploit has been confirmed, the nature of the vulnerability necessitates caution and proactive measures from security teams.
Organizations should prioritize patching the affected versions of the plugin immediately to mitigate the risk of exploitation. The vulnerability's status is currently marked as deferred, indicating a need for careful monitoring and assessment.
Given that user interaction is required for exploitation, organizations should also implement user awareness training to reduce the likelihood of successful attacks through social engineering.
Vulnerability Details
The official description of this vulnerability states: 'Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Grimdonkey Magic the Gathering Card Tooltips allows Stored XSS. This issue affects Magic the Gathering Card Tooltips: from n/a through <= 3.4.0.'
The vulnerability is classified under CWE-79, which pertains to improper neutralization of input during web page generation, allowing for cross-site scripting. The CVSS score of 6.5 reflects a medium severity level, indicating potential impact on confidentiality, integrity, and availability, albeit with low confidentiality and integrity impacts specifically.
The vulnerability was published on January 24, 2025, and the last modification was made on April 23, 2026.
Technical Analysis
The root cause of this vulnerability lies in the improper handling of user input, which allows attackers to inject malicious scripts into web pages that other users may visit. The attack vector is primarily network-based, requiring low complexity and granting low privileges. User interaction is necessary for the exploitation of this vulnerability, as the malicious payload needs to be executed within the context of the user’s session.
During exploitation, the potential impact includes low confidentiality, integrity, and availability, as the attack aims to manipulate client-side scripts without affecting server-side processing. This type of vulnerability underscores the importance of validating and sanitizing user inputs effectively.
Risk & Impact Analysis
Real-world deployment of this vulnerability could lead to significant risks, particularly for organizations heavily reliant on user interaction with their platforms. The potential blast radius includes any user who interacts with the plugin, making it a critical point of concern for organizations using it. With a CVSS score of 6.5, organizations should address this vulnerability in their priority patch cycle.
Given that the vulnerability is not currently listed in the Known Exploited Vulnerabilities (KEV) catalog, organizations still need to remain vigilant as the threat landscape evolves. The low EPSS score indicates a lower probability of exploitation; however, organizations should not dismiss the potential risk.
Exploitation Status
Signal | Status |
|---|---|
Known Exploit | No |
Public PoC | No |
Actively Exploited | No |
Ransomware Use | No |
Affected Versions
The vulnerability affects all versions of the Grimdonkey Magic the Gathering Card Tooltips plugin up to and including version 3.4.0. Organizations should ensure that they are not using these versions to avoid exposure.
Mitigation & Remediation
To mitigate this vulnerability, organizations should apply the latest patches provided by the vendor. If a patch is unavailable, consider implementing input validation and output encoding to prevent XSS vulnerabilities. Configuration hardening practices should also be reviewed to enhance security posture.
For further validation of security measures, organizations may consider engaging in penetration testing to identify other potential weaknesses.
Detection Guidance
Organizations should monitor logs for indicators of exploitation attempts. Behavioral anomalies in user sessions and unexpected changes in web page content are critical signs to detect potential XSS attacks. Implementing network signatures can also help in identifying malicious traffic patterns.
AppSecure Threat Intelligence Insight
This vulnerability highlights ongoing concerns regarding input validation and user interaction vulnerabilities in web applications. Security teams should remain vigilant and incorporate lessons learned from this incident to strengthen their application security frameworks. Organizations should consider reviewing their vulnerability management programs and ensure they include comprehensive testing for XSS vulnerabilities.
Additionally, organizations may benefit from regular reviews of their penetration testing methodologies to adapt to evolving threat landscapes effectively.
In conclusion, organizations should proactively address the risks associated with this vulnerability by implementing necessary patches and strengthening their security measures.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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