CVE Feed

    Dashboard / CVE / CVE-2021-3856

    CVE-2021-3856

    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.

    Published:Oct 4, 2021
    Last Modified:Nov 21, 2024
    EPS:Aug 26, 2022
    EPSS Score:0.00364
    CVSS Score:4.3

    Affected Products

    Vendor
    Redhat
    Product
    Keycloak
    Vendor
    Redhat
    Product
    Red Hat Single Sign On

    Exploits

    No exploit reference

    Related CVEs

    CVE-2026-18569 (CVSS 3.7) — A flaw was found in the backchannel logout endpoint of the keycloak-services component, which is part of the R…
    CVE-2026-9803 (CVSS 5.3) — A flaw was found in Keycloak's ClientRegistrationAuth component. A remote unauthenticated attacker can exploit…
    CVE-2026-9796 (CVSS 6.5) — A flaw was found in Keycloak. An authenticated administrator with the `manage-clients` role can exploit a Time…
    CVE-2026-9793 (CVSS 5.9) — A flaw was found in Keycloak. When a JSON Web Encryption (JWE) encrypted request object is submitted, Keycloak…
    CVE-2026-9792 (CVSS 6.5) — A flaw was found in Keycloak's Client Policies, specifically within the `org.keycloak.protocol.oidc` component…
    CVE-2026-9791 (CVSS 4.3) — A flaw was found in Keycloak. An authenticated user with existing organization membership can exploit this fla…
    CVE-2026-4628 (CVSS 4.3) — A flaw was found in Keycloak. An improper Access Control vulnerability in Keycloak’s User-Managed Access (UMA)…
    CVE-2026-3047 (CVSS 8.8) — A flaw was found in org.keycloak.broker.saml. When a disabled Security Assertion Markup Language (SAML) client…
    CVE-2026-0871 (CVSS 4.9) — A flaw was found in Keycloak. An administrator with `manage-users` permission can bypass the "Only administrat…
    CVE-2025-12150 (CVSS 3.1) — A flaw was found in Keycloak’s WebAuthn registration component. This vulnerability allows an attacker to bypas…

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High