Mediumish is a popular WordPress theme that is commonly used for blogs and news websites. This theme is known for its sleek and modern design that attracts a considerable number of users. It is widely used by content creators, bloggers, and publishers for showcasing their content in an alluring manner.
CVE-2021-24316 is a critical vulnerability detected in the Mediumish WordPress theme. This vulnerability is caused by the theme’s search feature which fails to sanitize the ‘s’ GET parameter before outputting it back to the page. This makes it possible for attackers to inject malicious script codes into web pages through the search box.
When exploited, this vulnerability can result in a full-blown Cross-site Scripting (XSS) attack. The attacker can execute arbitrary code within the web browser of the victim, which may result in significant damage. The attacker can gain unauthorized access to sensitive data, steal user login credentials, and initiate other attacks that compromise the integrity of the affected system.
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REFERENCES
- https://m0ze.ru/vulnerability/%5B2021-03-14%5D-%5BWordPress%5D-%5BCWE-79%5D-Mediumish-WordPress-Theme-v1.0.47.txt
- https://wpscan.com/vulnerability/57e27de4-58f5-46aa-9b59-809705733b2e
- https://www.wowthemes.net/themes/mediumish-wordpress/
To protect against this vulnerability, it is recommended that users take the following precautions:
- Update the Mediumish theme to the latest version
- Disable the search feature until the theme is updated
- Use a well-configured Web Application Firewall (WAF)
- Regularly back up the website in case of a breach
- Educate the website administrator and users on best security practices
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