Keycloak has Files or Directories Accessible to External Parties

MÉDIO 4.3CVE-2021-3856 · GHSA-3w4v-rvc4-2xpw · Published 26/08/2022 · updated 17/06/2026

Em resumo

CVE-2021-3856 é uma vulnerabilidade MÉDIO (CVSS 4.3) que afeta org.keycloak:keycloak-core, keycloak (redhat).
Chance de exploração nos próximos 30 dias (EPSS): 1.2%, maior que 67.1% das vulnerabilidades.
Correção: atualize para 15.1.0 ou posterior.

Package	Affected versions	Patched versions
org.keycloak:keycloak-core Maven	`< 15.1.0`	`15.1.0`
keycloak redhat	`< 15.1.0`	`15.1.0`

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.

NVD description

References

nvd.nist.gov/vuln/detail/CVE-2021-3856 · ADVISORY
keycloak/keycloak#8588 · WEB
keycloak/keycloak commit 73f0474 · WEB
access.redhat.com/security/cve/CVE-2021-3856 · WEB
bugzilla.redhat.com/show_bug.cgi · WEB
keycloak/keycloak · PACKAGE
issues.redhat.com/browse/KEYCLOAK-19422 · WEB

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Package

Affected versions

Patched versions

org.keycloak:keycloak-core

Maven

< 15.1.0

15.1.0

keycloak

redhat

< 15.1.0

15.1.0

Description

NVD description

Mais vulnerabilidades de org.keycloak:keycloak-core

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