CVE-2025-43866
BaseFortify
Publication date: 2025-06-12
Last updated on: 2025-09-17
Assigner: GitHub, Inc.
Description
Description
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| vantage6 | vantage6 | to 4.11.0 (exc) |
Helpful Resources
Exploitability
| CWE ID | Description |
|---|---|
| CWE-330 | The product uses insufficiently random numbers or values in a security context that depends on unpredictable numbers. |
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?
This vulnerability in vantage6 server involves the JWT secret key being auto-generated using UUID1 if the user does not define it. UUID1 is not cryptographically secure because it is partially predictable, which weakens the security of the JWT tokens generated by the server. This means attackers could potentially predict or guess the JWT secret key, compromising token security. The issue is fixed in version 4.11.0 by presumably using a more secure method for generating the JWT secret key. [1]
How can this vulnerability impact me? :
Because the JWT secret key is predictable when auto-generated using UUID1, attackers could potentially forge or tamper with JWT tokens, leading to unauthorized access or impersonation within the vantage6 server environment. This weakens the authentication and authorization mechanisms relying on JWT tokens, potentially exposing sensitive operations or data to unauthorized users. [1]
How can this vulnerability be detected on my network or system? Can you suggest some commands?
You can detect this vulnerability by checking the version of your vantage6-server package and inspecting the JWT secret key configuration. If the version is prior to 4.11 and the JWT secret key is not explicitly set by the user (i.e., it is auto-generated using UUID1), your system is vulnerable. There are no specific commands provided, but you can check the server version and configuration files for the JWT secret key setting. [1]
What immediate steps should I take to mitigate this vulnerability?
To mitigate this vulnerability immediately, manually define a secure JWT secret key in the vantage6 server configuration file instead of relying on the auto-generated UUID1 key. Additionally, upgrade the vantage6-server package to version 4.11 or later, where this issue is fixed. [1]