CVE-2021-40542: XSS
First published: Mon Oct 11 2021(Updated: )
Opensis-Classic Version 8.0 is affected by cross-site scripting (XSS). An unauthenticated user can inject and execute JavaScript code through the link_url parameter in Ajax_url_encode.php.
Credit: cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| OS4Ed OpenSIS | =8.0 |
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Reference Links
Frequently Asked Questions
What is CVE-2021-40542?
CVE-2021-40542 is the identification number for a cross-site scripting (XSS) vulnerability in Opensis-Classic version 8.0.
How does CVE-2021-40542 affect Opensis-Classic?
CVE-2021-40542 allows an unauthenticated user to inject and execute JavaScript code through the link_url parameter in Ajax_url_encode.php.
What is the severity of CVE-2021-40542?
CVE-2021-40542 has a severity level of medium with a CVSS score of 6.1.
How can an attacker exploit CVE-2021-40542?
An attacker can exploit CVE-2021-40542 by injecting malicious JavaScript code through the link_url parameter in Ajax_url_encode.php, potentially leading to session hijacking or stealing sensitive information.
Is there a fix available for CVE-2021-40542?
At the moment, there is no specific patch or fix available for CVE-2021-40542. It is recommended to update to a newer version of Opensis-Classic when it becomes available and implement additional security measures, such as input validation and output encoding, to mitigate the risk of cross-site scripting attacks.
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