CVEvulnerability

CVE-2021-3856

4.3 MEDIUM Published 2022-08-26 Modified 2026-06-17 Official page ↗

Status: Modified
Published: 2022-08-26
Last modified: 2026-06-17
Assigner: [email protected]
CVSS 3.1 ([email protected]): 4.3 MEDIUM — CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Weaknesses: CWE-22, CWE-552

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.

Affected configurations

• redhat keycloak (< 15.1.0)

Weakness · CWE (2)

CWE-22 Improper Limitation of a Pathname to a Restricted Directory weakness
CWE-552 Files or Directories Accessible to External Parties weakness

References

https://access.redhat.com/security/cve/CVE-2021-3856 Vendor Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2010164 Issue Tracking, Vendor Advisory
https://github.com/keycloak/keycloak/commit/73f0474008e1bebd0733e62a22aceda9e5de6743 Patch, Third Party Advisory
https://github.com/keycloak/keycloak/pull/8588 Patch, Third Party Advisory
https://issues.redhat.com/browse/KEYCLOAK-19422 Permissions Required, Vendor Advisory
https://access.redhat.com/security/cve/CVE-2021-3856 Vendor Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2010164 Issue Tracking, Vendor Advisory
https://github.com/keycloak/keycloak/commit/73f0474008e1bebd0733e62a22aceda9e5de6743 Patch, Third Party Advisory
https://github.com/keycloak/keycloak/pull/8588 Patch, Third Party Advisory
https://issues.redhat.com/browse/KEYCLOAK-19422 Permissions Required, Vendor Advisory

CVE-2021-3856

Description

Affected configurations

Related

Weakness · CWE (2)

References