CVE-2025-6849
BaseFortify
Publication date: 2025-06-29
Last updated on: 2026-04-29
Assigner: VulDB
Description
Description
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| fabian | simple_forum | 1.0 |
Helpful Resources
Exploitability
| CWE ID | Description |
|---|---|
| CWE-79 | The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. |
| CWE-94 | The product constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the syntax or behavior of the intended code segment. |
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?
CVE-2025-6849 is a reflected Cross-Site Scripting (XSS) vulnerability in Simple Forum version 1.0, specifically in the /forum_edit1.php file. It occurs because the application improperly reflects user input from the "text" POST parameter directly into the HTML response without proper sanitization or encoding. This allows attackers to inject and execute arbitrary JavaScript code within the context of an authenticated user's session. [1, 2, 3]
How can this vulnerability impact me? :
This vulnerability can lead to session hijacking (such as cookie theft), credential compromise, redirection to malicious websites, phishing attacks, CSRF chaining, and potentially full account takeover if the attacker exploits the authenticated session. Exploitation requires a valid logged-in user session. The injected malicious script can execute arbitrary JavaScript code, causing various malicious actions including defacement and unauthorized actions on behalf of the user. [1, 2, 3]
How can this vulnerability be detected on my network or system? Can you suggest some commands?
This vulnerability can be detected by sending crafted POST requests to the /forum_edit1.php endpoint with the "text" parameter containing a script tag (e.g., <script>alert(1)</script>) and observing if the script executes in the response, indicating reflected XSS. Additionally, attackers may be identified by monitoring for POST requests to /forum_edit1.php with suspicious payloads. A simple detection command using curl could be: curl -X POST -d "text=<script>alert(1)</script>" http://target/forum_edit1.php If the response contains the script tag unencoded and triggers script execution in a browser, the vulnerability is present. Also, Google dorking with the query inurl:forum_edit1.php can help identify vulnerable targets. [2, 3]
What immediate steps should I take to mitigate this vulnerability?
Immediate mitigation steps include: 1. Apply output encoding to the "text" parameter before reflecting it in HTML, for example using PHP's htmlspecialchars function: htmlspecialchars($_POST['text'], ENT_QUOTES, 'UTF-8'). 2. Implement a Content Security Policy (CSP) header to restrict script execution, such as: Content-Security-Policy: default-src 'self'; script-src 'self'; 3. Validate and sanitize input by limiting allowed characters and length for the "text" parameter. 4. Conduct a comprehensive audit of all user input reflection points in the application. 5. Perform regular security testing including static and dynamic analysis. If possible, replace the affected product with a secure alternative as no official patches are available. [2, 3]