CVE-2025-24630 is a reflected Cross-site Scripting (XSS) vulnerability identified in the MantraBrain Sikshya Learning Management System (LMS) affecting versions up to 0.0.21. The vulnerability stems from improper neutralization of user-supplied input during the generation of web pages, allowing malicious scripts to be injected and reflected back to users. This type of XSS does not require stored payloads or persistent injection, but instead relies on crafted URLs or input fields that reflect the malicious content immediately. When a victim clicks on a malicious link or submits crafted input, the injected script executes in their browser context, potentially compromising session cookies, authentication tokens, or enabling actions on behalf of the user without their consent. Sikshya LMS is an educational platform used to manage courses, users, and content, making it a valuable target for attackers seeking to disrupt educational services or steal sensitive information. No CVSS score has been assigned yet, and no known exploits have been reported in the wild. The vulnerability was reserved in January 2025 and published in February 2025. No official patches or updates have been linked, indicating that users must rely on interim mitigations. The lack of input sanitization or encoding in the affected versions is the root cause, and the vulnerability can be exploited without authentication, increasing its risk profile. The reflected XSS can be leveraged for phishing, session hijacking, or delivering further malware payloads. Organizations using Sikshya LMS should urgently review their exposure and apply recommended mitigations.

The impact of CVE-2025-24630 on organizations worldwide can be significant, especially for educational institutions and organizations relying on Sikshya LMS for course delivery and user management. Successful exploitation can lead to theft of user credentials, session hijacking, and unauthorized actions performed with the privileges of the victim user. This can compromise the confidentiality and integrity of sensitive educational data, including student records, grades, and personal information. Additionally, attackers could use the vulnerability to distribute malware or conduct phishing attacks targeting LMS users. The disruption of LMS services could affect the availability of educational resources and undermine trust in the platform. Since the vulnerability does not require authentication and can be triggered via crafted URLs, the attack surface is broad, potentially affecting all users who access the vulnerable LMS instance. The absence of known exploits in the wild currently limits immediate widespread impact, but the vulnerability remains a critical risk until patched. Organizations failing to mitigate this vulnerability may face reputational damage, regulatory penalties for data breaches, and operational disruptions.

To mitigate CVE-2025-24630, organizations should implement the following specific measures: 1) Apply strict input validation and output encoding on all user-supplied data within the Sikshya LMS application, ensuring that special characters are properly escaped before rendering in HTML contexts. 2) Deploy a robust Content Security Policy (CSP) to restrict the execution of unauthorized scripts and reduce the impact of potential XSS payloads. 3) Use web application firewalls (WAFs) with rules designed to detect and block reflected XSS attack patterns targeting the LMS. 4) Educate users and administrators about the risks of clicking on suspicious links and encourage the use of multi-factor authentication to limit session hijacking risks. 5) Monitor application logs and network traffic for unusual requests or patterns indicative of XSS exploitation attempts. 6) Engage with the vendor or community to obtain patches or updates as soon as they become available and prioritize timely application of security updates. 7) Consider isolating the LMS environment and restricting access to trusted networks until a patch is applied. These targeted actions go beyond generic advice by focusing on immediate protective controls and proactive monitoring tailored to the LMS environment.