Overview
The cybersecurity landscape is continuously evolving, and new vulnerabilities are discovered regularly. One such recent discovery is the CVE-2025-30960: Missing Authorization vulnerability in NotFound FS Poster. This vulnerability, which affects versions through 6.5.8, poses significant risks to users of the FS Poster application. Unauthorized individuals can exploit this flaw, potentially leading to system compromise or data leakage. This blog post will examine this vulnerability in detail, providing guidance on mitigating its effects.
Vulnerability Summary
CVE ID: CVE-2025-30960
Severity: High (8.3)
Attack Vector: Network
Privileges Required: None
User Interaction: None
Impact: Unauthorized system access, potential system compromise, and data leakage
Affected Products
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Product | Affected Versions
NotFound FS Poster | Through 6.5.8
How the Exploit Works
The Missing Authorization vulnerability in NotFound FS Poster allows an attacker to access the system without the necessary permissions. This flaw can be exploited over a network, without any necessary interaction from a user or privileges. Upon successful exploitation, an attacker could compromise the system, gain unauthorized access, and potentially exfiltrate sensitive data.
Conceptual Example Code
An attacker could exploit this vulnerability by sending a malicious payload to the affected application. This could be done with a simple HTTP request, as shown below:
POST /unprotected/endpoint HTTP/1.1
Host: target.example.com
Content-Type: application/json
{ "malicious_payload": "..." }The “malicious_payload” would be designed to exploit the missing authorization flaw, allowing the attacker to bypass the application’s security measures and gain unauthorized access.
Mitigation Guidance
The most effective way to mitigate this vulnerability is by applying the patch provided by the vendor. This patch addresses the missing authorization flaw, preventing unauthorized system access.
As a temporary measure, users can implement a Web Application Firewall (WAF) or Intrusion Detection System (IDS). These systems can help detect and block malicious traffic targeting the vulnerability. However, this is only a temporary solution, and users should apply the vendor’s patch as soon as possible to fully protect their systems.
In conclusion, CVE-2025-30960 is a serious vulnerability that poses significant risks to NotFound FS Poster users. It’s crucial that users apply the necessary patches and updates to protect their systems from potential compromise.