CVE-2025-23831: Medium Vulnerability in QR Code Generator

CVE-2025-23831 is classified as a Cross-site Scripting (XSS) vulnerability that allows for improper neutralization of input during web page generation. This vulnerability affects the mobstac QR Code Generator plugin, specifically versions from n/a through 1.2.6. The CVSS score of 6.5 indicates a medium severity level, and organizations should be aware of the potential risks associated with this vulnerability.

This vulnerability allows attackers to inject malicious scripts into web pages viewed by users, which can lead to unauthorized actions being carried out on behalf of the users. The risk to organizations includes potential data theft, session hijacking, and the compromise of sensitive information.

As of now, there are no known exploits publicly available for this vulnerability, but the potential for exploitation remains. Organizations should prioritize patching immediately to mitigate the risk of exploitation.

Given its medium severity, organizations should address this vulnerability in their priority patch cycle to reduce the risk of an attack.

Vulnerability Details

The vulnerability is classified under CWE-79, which pertains to improper neutralization of input during web page generation. The vulnerability was published on January 16, 2025, and has received a CVSS score of 6.5, denoting medium severity. The affected product is the mobstac QR Code Generator plugin, specifically versions from n/a to 1.2.6.

Technical Analysis

The root cause of this vulnerability is the failure to properly sanitize user input, allowing for the injection of malicious scripts. The attack vector is network-based, requiring low attack complexity and low privileges, with user interaction necessary for exploitation. The potential impacts on confidentiality, integrity, and availability are all classified as low.

Risk & Impact Analysis

Organizations utilizing the affected QR Code Generator plugin may face significant risks if remediation is not prioritized. The potential blast radius includes all users of the plugin who may be exposed to the vulnerabilities, especially if malicious scripts are injected into web pages they visit. Given the current CVSS score and the absence of known exploits, organizations should evaluate their risk management strategies and schedule remediation accordingly.

Exploitation Status

Affected Versions

The affected versions of the QR Code Generator plugin include all versions from n/a to 1.2.6. Organizations should ensure they are using a patched version to mitigate the risk of exploitation.

Mitigation & Remediation

Organizations should prioritize patching the QR Code Generator plugin to the latest version to remediate this vulnerability. If immediate patching is not possible, consider implementing input validation and sanitization measures in your web applications. Monitoring for unusual behavior and user reports of issues may help in early detection of any exploitation attempts.Penetration testing can also assist in identifying potential vulnerabilities in your systems.

Detection Guidance

Organizations should monitor logs for any suspicious activity related to the QR Code Generator plugin. Look for unusual HTTP requests that may indicate attempts to exploit this vulnerability. Additionally, behavioral anomalies related to user sessions might signal an ongoing attack.

AppSecure Threat Intelligence Insight

CVE-2025-23831 is indicative of the ongoing trend of XSS vulnerabilities in web applications. Security teams should take this as a reminder to regularly review and enhance their input validation and sanitization practices. Implementing robust security measures can help mitigate the risk associated with this and similar vulnerabilities.

For further insights on web application security, organizations can refer to our guide on web application penetration testing and the importance of regular security assessments.