CVE-2025-58828 is a Stored Cross-Site Scripting (XSS) vulnerability classified under CWE-79, affecting the codemstory 소셜톡 (Social Talk) plugin up to version 1.2.1. Stored XSS occurs when malicious input is improperly neutralized and subsequently stored by the application, later being served to users without adequate sanitization. This vulnerability allows an attacker with at least limited privileges (PR:L) and requiring user interaction (UI:R) to inject malicious scripts into web pages generated by the affected plugin. The CVSS 3.1 base score of 6.5 reflects a medium severity, with network attack vector (AV:N), low attack complexity (AC:L), partial privileges required, and a scope change (S:C) indicating that the vulnerability affects resources beyond the initially vulnerable component. The impact includes limited confidentiality, integrity, and availability loss, as the injected scripts can execute in the context of other users, potentially stealing session tokens, defacing content, or performing actions on behalf of users. No known exploits are currently reported in the wild, and no patches have been linked yet. The vulnerability is notable because stored XSS can have persistent effects and impact multiple users, especially in social or collaborative environments like those targeted by the 소셜톡 plugin. The vulnerability requires user interaction, meaning that victims must visit or interact with a compromised page for exploitation to succeed.

For European organizations using the codemstory 소셜톡 plugin, particularly those integrating it into customer-facing or internal communication platforms, this vulnerability poses a risk of session hijacking, data theft, or unauthorized actions performed under the victim's credentials. The persistent nature of stored XSS can lead to widespread compromise of user accounts and erosion of trust in the affected service. Confidential information could be exposed, and integrity of displayed content could be undermined, potentially leading to reputational damage and regulatory scrutiny under GDPR if personal data is compromised. Availability impact is limited but possible if injected scripts disrupt normal operations or cause denial of service. Organizations relying on this plugin for social interaction or messaging should be aware of the risk of lateral movement or privilege escalation if attackers leverage this vulnerability as an initial foothold.

Organizations should immediately audit their use of the codemstory 소셜톡 plugin and plan to upgrade to a patched version once available. In the absence of an official patch, applying web application firewall (WAF) rules to detect and block typical XSS payloads targeting the plugin's input fields can reduce risk. Input validation and output encoding should be enforced rigorously on all user-supplied data, especially in areas where the plugin stores and displays messages or comments. Security teams should conduct thorough code reviews and penetration testing focused on XSS vectors within the plugin's functionality. Additionally, implementing Content Security Policy (CSP) headers can help mitigate the impact of injected scripts by restricting script execution sources. User awareness training to recognize suspicious links or content can reduce successful exploitation via user interaction. Monitoring logs for unusual activity related to the plugin's endpoints is also recommended.