GHSA-jh6m-3pqw-242h
GitHub Security Advisory
Keycloak Gatekeeper vulnerable to bypass on using lower case HTTP headers
✓ GitHub Reviewed
HIGH
Has CVE
Advisory Details
A vulnerability was found in all versions of the deprecated package Keycloak Gatekeeper, where on using lower case HTTP headers (via cURL) we can bypass our Gatekeeper. Lower case headers are also accepted by some webservers (e.g. Jetty). This means there is no protection when we put a Gatekeeper in front of a Jetty server and use lowercase headers.
Affected Packages
Go
github.com/keycloak/keycloak-gatekeeper
Affected versions:
0
(last affected: 1.2.8)
Related CVEs
Key Information
7.5
/10
Dataset
Last updated: September 23, 2025 6:31 AM
Data from GitHub Advisory Database. This information is provided for research and educational purposes.