{"id":64379,"date":"2025-08-28T17:48:29","date_gmt":"2025-08-28T17:48:29","guid":{"rendered":""},"modified":"2025-09-14T12:47:37","modified_gmt":"2025-09-14T18:47:37","slug":"cve-2025-49399-critical-csrf-vulnerability-in-basix-nex-forms","status":"publish","type":"post","link":"https:\/\/www.ameeba.com\/blog\/cve-2025-49399-critical-csrf-vulnerability-in-basix-nex-forms\/","title":{"rendered":"CVE-2025-49399: Critical CSRF Vulnerability in Basix NEX-Forms<\/strong>"},"content":{"rendered":"

Overview<\/strong><\/p>\n

CVE-2025-49399 represents a critical cybersecurity threat, a Cross-Site Request Forgery (CSRF) vulnerability, that affects Basix NEX-Forms. This vulnerability is particularly dangerous as it allows an attacker to perform actions on a website on behalf of authenticated users without their knowledge, potentially leading to system compromise or data leakage. Given the widespread use of NEX-Forms, this vulnerability has a broad impact<\/a>, affecting numerous websites and users worldwide. Therefore, understanding and addressing this vulnerability is of utmost importance to protect system<\/a> integrity and data confidentiality.<\/p>\n

Vulnerability Summary<\/strong><\/p>\n

CVE ID: CVE-2025-49399
\nSeverity: Critical (8.8 CVSS score)
\nAttack Vector: Network
\nPrivileges Required: None
\nUser Interaction: Required
\nImpact: Potential system compromise or data<\/a> leakage<\/p>\n

Affected Products<\/strong><\/p>\n

Product | Affected Versions<\/p>\n

Basix NEX-Forms | Up to 9.1.3<\/p>\n

How the Exploit Works<\/strong><\/p>\n

This CSRF vulnerability<\/a> is exploited when an attacker tricks a victim into executing unwanted actions on a web application in which they’re authenticated. The attack works by including a link or script in a page that accesses a site<\/a> where the user is known to be authenticated. In the context of this vulnerability, an attacker can forge a request<\/a> to the Basix NEX-Forms, leading to unauthorized actions.<\/p>\n

Conceptual Example Code<\/strong><\/p>\n

Below is a conceptual example of how this vulnerability might be exploited using a malicious<\/a> payload in an HTTP POST request:<\/p>\n

POST \/nex-forms\/endpoint HTTP\/1.1\nHost: target.example.com\nContent-Type: application\/x-www-form-urlencoded\nuser_session=ValidUserSession&form_id=1&action=delete<\/code><\/pre>\n
In this example, the attacker forges a POST request to delete a form<\/a> on the victim’s behalf without their knowledge or consent.<\/p>\n
Mitigation<\/strong><\/p>\n
To mitigate this vulnerability, users are advised to apply the vendor patch once it becomes available. Until then, the use of a Web Application Firewall (WAF) or an Intrusion Detection System (IDS) can offer temporary mitigation by detecting and preventing CSRF attacks. Regular updating and patching of systems, as well as user education on the dangers of clicking on untrusted links, are crucial in maintaining a strong security posture against such attacks.<\/p>\n","protected":false},"excerpt":{"rendered":"
Overview CVE-2025-49399 represents a critical cybersecurity threat, a Cross-Site Request Forgery (CSRF) vulnerability, that affects Basix NEX-Forms. This vulnerability is particularly dangerous as it allows an attacker to perform actions on a website on behalf of authenticated users without their knowledge, potentially leading to system compromise or data leakage. Given the widespread use of NEX-Forms, […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"om_disable_all_campaigns":false,"_monsterinsights_skip_tracking":false,"footnotes":""},"categories":[1],"tags":[],"vendor":[],"product":[],"attack_vector":[90],"asset_type":[],"severity":[],"exploit_status":[],"class_list":["post-64379","post","type-post","status-publish","format-standard","hentry","category-uncategorized","attack_vector-csrf"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t