CVE-2022-3782: redhat keycloak Path Traversal

Vulnerability summary

CVE-2022-3782 is a critical (CVSS 9.1) Path Traversal vulnerability in redhat keycloak. EPSS estimates a 5.80% chance of exploitation in the next 30 days, higher than 93% of scored vulnerabilities.

Timeline

1. 11-01-2023
   PublishedVulnerability first disclosed.
2. 09-04-2025
   Last modifiedVulnerability information updated.

Description

keycloak: path traversal via double URL encoding. A flaw was found in Keycloak, where it does not properly validate URLs included in a redirect. An attacker can use this flaw to construct a malicious request to bypass validation and access other URLs and potentially sensitive information within the domain or possibly conduct further attacks. This flaw affects any client that utilizes a wildcard in the Valid Redirect URIs field.

• CWE-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory.