CVE-2025-66450
BaseFortify
Publication date: 2025-12-11
Last updated on: 2025-12-15
Assigner: GitHub, Inc.
Description
Description
CVSS Scores
EPSS Scores
| Probability: | |
| Percentile: |
Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| librechat | librechat | to 0.8.1 (exc) |
Helpful Resources
Exploitability
| CWE ID | Description |
|---|---|
| CWE-80 | The product receives input from an upstream component, but it does not neutralize or incorrectly neutralizes special characters such as "<", ">", and "&" that could be interpreted as web-scripting elements when they are sent to a downstream component that processes web pages. |
Attack-Flow Graph
AI Powered Q&A
How does this vulnerability affect compliance with common standards and regulations (like GDPR, HIPAA)?:
The vulnerability can lead to loss of privacy for users who view the shared chat links containing malicious trackers. This privacy loss could potentially impact compliance with privacy regulations such as GDPR and HIPAA, which require protection of personal data and user privacy. However, specific compliance impacts are not detailed in the provided information.
Can you explain this vulnerability to me?
In LibreChat versions 0.8.0 and below, an attacker can modify the iconURL parameter in a POST request when posting a question. This allows malicious code to be stored in the chat, which can then be shared with other users. When users view the shared chat containing this malicious tracker, resources loaded can lead to loss of privacy.
How can this vulnerability impact me? :
This vulnerability can lead to loss of privacy for users who view shared chat links containing malicious trackers. Attackers can inject malicious code that is stored and shared, potentially exposing users to privacy risks when they access these chats.
How can this vulnerability be detected on my network or system? Can you suggest some commands?
You can detect this vulnerability by monitoring POST requests to the LibreChat application and inspecting the iconURL parameter for unexpected or malicious modifications. Look for POST requests where the iconURL parameter contains suspicious URLs or code. Network traffic analysis tools like Wireshark or command-line tools like curl or tcpdump can be used to capture and analyze such requests. For example, using curl to replay or inspect POST requests or using grep to search server logs for iconURL parameter usage may help identify exploitation attempts.
What immediate steps should I take to mitigate this vulnerability?
The immediate mitigation step is to upgrade LibreChat to version 0.8.1 or later, where this vulnerability is fixed. Additionally, you can implement input validation and sanitization on the iconURL parameter to prevent malicious code injection. Restricting or monitoring shared chat links for suspicious resource loading can also help reduce privacy risks.