CVE-2026-53624
Description
A flaw was found in the Fiber web framework's helmet middleware. This vulnerability occurs because the middleware incorrectly checks for the HTTPS protocol, preventing the Strict-Transport-Security (HSTS) response header from being set. This can allow an attacker to bypass security mechanisms, potentially leading to information disclosure by enabling downgrade attacks where sensitive data might be exposed over unencrypted connections.
Statement
Red Hat Product Security has determined that this vulnerability does not affect any currently supported Red Hat product. This assessment may evolve based on further analysis and discovery. For more information about this vulnerability and the products it affects, please see the linked references.
Mitigation
To mitigate this issue, configure a reverse proxy (such as Apache HTTP Server or Nginx) in front of the Fiber application to enforce the `Strict-Transport-Security` header. This ensures that clients are instructed to connect via HTTPS for subsequent requests, regardless of the application's internal handling. For example, in Apache HTTP Server, add `Header always set Strict-Transport-Security "max-age=31536000; includeSubDomains"` to the virtual host configuration. After applying the configuration, reload or restart the reverse proxy service for the changes to take effect.
Understanding the Weakness (CWE)
Access Control
Technical Impact: Bypass Protection Mechanism
Frequently Asked Questions
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