Cross-site scripting in keycloak
Priority LOW 29CWE-79Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- Cross-site scripting
- Confidentiality · integrity · availability
- Low · Low · None
- Fix status
- Partial Red Hat: 1 fixed, 1 without a fix
Attack profile from CVSS 3.1 · NVD. Fix status from CNA, GitHub and Red Hat. Impact type from CWE-79.
Summary
A flaw was found in Keycloak's data filter, in version 10.0.1, where it allowed the processing of data URLs in some circumstances. This flaw allows an attacker to conduct cross-site scripting or further attacks.
Why it matters now
EPSS 0.00931 60th percentileScored 2026-11-07
Fix Partial org.keycloak:keycloak-parent (Maven): 10.0.2Red Hat: 1 advisoryRed Hat: 1 fixed, 1 without a fix
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | keycloak | keycloak 10.0.1 | — | No fix listed | CNA |
| — | org.keycloak:keycloak-parent (Maven) | before 10.0.2 | 10.0.2 | Patch available | GHSA-hgpg-593r-hhvp |
- keycloak Vendor— Affected keycloak 10.0.1 Fixed in — No fix listed CNA
- org.keycloak:keycloak-parent (Maven) Vendor— Affected before 10.0.2 Fixed in 10.0.2 Patch available GHSA-hgpg-593r-hhvp
Remediation
- Fix · GHSA-hgpg-593r-hhvp org.keycloak:keycloak-parent (Maven) Fixed in 10.0.2 Advisory →
Red Hat 1 advisory
- RHSA-2020:2813 Released 2020-07-02 · Red Hat rating ImportantRed Hat Single Sign-On 7.4.1 security update
- Red Hat Single Sign-On 7.4.1
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Single Sign-On 7 | Affected | No fix yet |
| Red Hat Single Sign-On 7.4.1 | Fixed | RHSA-2020:2813 |
Not affected: 5 products
- Red Hat Decision Manager 7
- Red Hat Fuse 7
- Red Hat OpenShift Application Runtimes
- Red Hat Process Automation 7
- Red Hat support for Spring Boot
Timeline
- 2026-10-02 Threatist record created from CVE-2020-10748
- 2026-10-03 Alias added: GHSA-hgpg-593r-hhvp
References
More Red Hat Keycloak vulnerabilities
- TI-2024-01049 Keycloak: path transversal in redirection validation CVSS 3.1HIGH 8.1
- TI-2023-26623 The SSH transport protocol with certain OpenSSH extensions, found in OpenSSH before 9.6… CVSS 3.1MEDIUM 5.9
- TI-2020-08665 Server-side request forgery in keycloak CVSS 3.1MEDIUM 5.3
- TI-2022-03468 Path traversal in Red Hat Keycloak CVSS 3.1CRITICAL 9.1
- TI-2021-03612 A POST based reflected Cross Site Scripting vulnerability on has been identified in Keycloak. CVSS 3.1MEDIUM 6.1
- TI-2022-03994 Cross-site scripting in keycloak CVSS 3.1CRITICAL 10.0
Sources
- CVE-2020-10748 · CVE Program
- CVE-2020-10748 · NVD
- FIRST EPSS
- GHSA-hgpg-593r-hhvp · GitHub Advisory Database · CC BY 4.0
- CVE-2020-10748 · Red Hat security data · CC BY 4.0
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