Vulnerability CVE-2021-3856
Published: 2022-08-26

Description:
ClassLoaderTheme and ClasspathThemeResourceProviderFactory allows reading any file available as a resource to the classloader. By sending requests for theme resources with a relative path from an external HTTP client, the client will receive the content of random files if available.

 References:
https://github.com/keycloak/keycloak/commit/73f0474008e1bebd0733e62a22aceda9e5de6743
https://bugzilla.redhat.com/show_bug.cgi?id=2010164
https://access.redhat.com/security/cve/CVE-2021-3856
https://issues.redhat.com/browse/KEYCLOAK-19422
https://github.com/keycloak/keycloak/pull/8588
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