Overview
This report shines a light on the CVE-2025-46349 vulnerability, a reflected XSS (Cross-Site Scripting) flaw found in YesWiki, a PHP-based wiki system. The vulnerability, rated with a CVSS Severity Score of 7.6, affects all versions of YesWiki prior to 4.5.4. This vulnerability is significant due to its potential to compromise systems or lead to data leakage.
Vulnerability Summary
CVE ID: CVE-2025-46349
Severity: High (CVSS: 7.6)
Attack Vector: Remote
Privileges Required: None
User Interaction: Required
Impact: System Compromise, Data Leakage
Affected Products
Share secrets securely
Ameeba is private infrastructure for communication and sensitive work built on encrypted identity instead of exposed corporate identity systems.
Passwords, credentials, confidential files, screenshots, internal discussions, sensitive AI context, and private coordination should not become exposed across ordinary communication platforms.
- • Encrypted identity
- • Private Spaces for organizations and teams
- • End-to-end encrypted chat, calls, files, and notes
- • Sensitive AI work and protected collaboration
- • Built for information that cannot leak
Our mission is to secure human work alongside AI.
Product | Affected Versions
YesWiki | Prior to 4.5.4
How the Exploit Works
This vulnerability stems from improper sanitization of user input in the file upload form of YesWiki. An unauthenticated attacker can craft a malicious link, embedding a script. This script is then reflected back to the user’s browser when the victim clicks the link, executing within the context of the user’s session. This can lead to unauthorized actions being performed, session hijacking, or sensitive data exposure.
Conceptual Example Code
Here is a conceptual example of how an HTTP request carrying the malicious payload might look:
GET /file-upload-form?filename=<script>malicious_code_here</script> HTTP/1.1
Host: vulnerable-yeswiki-site.comIn this example, the “malicious_code_here” would be replaced by the actual exploit code the attacker wishes to run on the victim’s browser.
Mitigation Guidance
Users are advised to immediately update their YesWiki installations to version 4.5.4 or later, where this vulnerability has been patched. In situations where immediate update is not possible, using a Web Application Firewall (WAF) or Intrusion Detection System (IDS) can serve as temporary mitigation, blocking or alerting on potential exploit attempts.