CVE-2021-3856
MEDIUM
4.3
CVSS Score
Published: August 26, 2022 at 03:25 PM UTC
Updated: June 17, 2026 at 04:05 AM UTC
1 product affected across 1 vendorKeycloak
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Severity
MEDIUM4.3
Exploit prediction
EPSS 1%
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
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
Patch and advisory references
References (5)
x_refsource_MISCVendor Advisory
Source: [email protected]
https://access.redhat.com/security/cve/CVE-2021-3856x_refsource_MISCIssue TrackingVendor Advisory
Source: [email protected]
https://bugzilla.redhat.com/show_bug.cgi?id=2010164x_refsource_MISCPatchThird Party Advisory
Source: [email protected]
https://github.com/keycloak/keycloak/commit/73f0474008e1bebd0733e62a22aceda9e5de6743x_refsource_MISCPatchThird Party Advisory
Source: [email protected]
https://github.com/keycloak/keycloak/pull/8588x_refsource_MISCPermissions RequiredVendor Advisory
Source: [email protected]
https://issues.redhat.com/browse/KEYCLOAK-19422CVSS
- Attack Vector
- NETWORK
- Complexity
- LOW
- Privileges
- LOW
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality
- LOW
- Integrity
- NONE
- Availability
- NONE
Vector?
Quick Info
StatusMODIFIED
CWE
CWE-552CWE-22
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