CVE-2025-46229 is a Stored Cross-Site Scripting (XSS) vulnerability identified in the Israpil Textmetrics product, affecting versions up to and including 3.6.2. The vulnerability arises from improper neutralization of input during web page generation, classified under CWE-79. Stored XSS occurs when malicious input is persistently stored by the application (e.g., in a database) and later rendered in web pages without proper sanitization or encoding. This allows an attacker to inject malicious scripts that execute in the context of other users' browsers when they view the affected pages. The vulnerability specifically impacts the Textmetrics platform, which is a web-based tool used for text analysis and optimization, potentially involving user-generated content or input fields that are reflected in the web interface. The lack of available patches at the time of reporting indicates that the vendor has not yet released a fix, increasing the window of exposure. Although no known exploits are currently observed in the wild, the nature of stored XSS vulnerabilities makes them attractive for attackers aiming to steal session cookies, perform actions on behalf of authenticated users, or deliver further payloads such as malware or phishing content. The vulnerability requires that the attacker can submit crafted input that is stored and later rendered to other users, but does not require authentication if the input submission point is publicly accessible. User interaction is necessary in the sense that victims must visit the compromised page to trigger script execution. The vulnerability affects confidentiality by potentially exposing sensitive user data, integrity by enabling unauthorized actions, and availability indirectly if exploited to perform denial-of-service attacks via script execution loops or resource exhaustion.

For European organizations using Israpil Textmetrics, this vulnerability poses a significant risk to the confidentiality and integrity of their web applications and user data. Stored XSS can lead to session hijacking, credential theft, and unauthorized actions performed under the guise of legitimate users. This is particularly concerning for organizations handling sensitive or regulated data, such as those in finance, healthcare, or government sectors. The exploitation could also damage organizational reputation and lead to compliance violations under GDPR if personal data is compromised. Since Textmetrics is a SaaS or web-based tool used for content optimization, organizations relying on it for internal or external communications could face targeted attacks that leverage the XSS flaw to inject malicious content into their workflows. The absence of a patch increases the urgency for mitigation. Additionally, attackers could use this vulnerability as a foothold to pivot into broader network attacks if integrated with other vulnerabilities or social engineering campaigns. The impact on availability is less direct but could manifest if attackers disrupt user sessions or overload the application through malicious scripts.

1. Immediate mitigation should include implementing Web Application Firewall (WAF) rules to detect and block malicious input patterns targeting Textmetrics interfaces. 2. Employ Content Security Policy (CSP) headers to restrict the execution of unauthorized scripts and reduce the impact of XSS payloads. 3. Conduct thorough input validation and output encoding on all user-supplied data before rendering it in the web interface, focusing on HTML, JavaScript, and attribute contexts. 4. Restrict access to Textmetrics input submission points to authenticated and authorized users where possible, reducing the attack surface. 5. Monitor application logs and user activity for unusual input patterns or script execution anomalies. 6. Engage with the vendor to obtain patches or updates as soon as they become available and plan for prompt deployment. 7. Educate users and administrators about the risks of XSS and encourage cautious behavior when interacting with web content. 8. If feasible, isolate the Textmetrics environment or limit its integration with critical systems until the vulnerability is remediated.