Insufficient verification of data authenticity in Red Hat keycloak
Priority LOW 24CWE-345Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Security bypass, Spoofing
- Confidentiality · integrity · availability
- Low · Low · None
- Fix status
- Partial Red Hat: 4 fixed, 3 without a fix
Attack profile from CVSS 3.0 · CNA. Fix status from CNA, GitHub and Red Hat. Impact type from CWE-345 and CWE-295.
Summary
It was found that SAML authentication in Keycloak 3.4.3.Final incorrectly authenticated expired certificates. A malicious user could use this to access unauthorized data or possibly conduct further attacks.
Why it matters now
EPSS 0.00352 28th percentileScored 2026-11-07
Fix Partial org.keycloak:keycloak-saml-adapter-core (Maven): 4.4.0.Finalorg.keycloak:keycloak-services (Maven): 4.4.0.FinalRed Hat: 4 advisoriesRed Hat: 4 fixed, 3 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 |
|---|---|---|---|---|---|
| Red Hat | keycloak | 3.4.3.Final | — | No fix listed | CNA |
| — | org.keycloak:keycloak-saml-adapter-core (Maven) | before 4.4.0.Final | 4.4.0.Final | Patch available | GHSA-xvv8-8wh9-9fh2 |
| — | org.keycloak:keycloak-services (Maven) | before 4.4.0.Final | 4.4.0.Final | Patch available | GHSA-xvv8-8wh9-9fh2 |
- keycloak VendorRed Hat Affected 3.4.3.Final Fixed in — No fix listed CNA
- org.keycloak:keycloak-saml-adapter-core (Maven) Vendor— Affected before 4.4.0.Final Fixed in 4.4.0.Final Patch available GHSA-xvv8-8wh9-9fh2
- org.keycloak:keycloak-services (Maven) Vendor— Affected before 4.4.0.Final Fixed in 4.4.0.Final Patch available GHSA-xvv8-8wh9-9fh2
CPE configurations NVD · 4
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:redhat:keycloak:3.4.3:*:*:*:*:*:*:* | 3.4.3 | Vulnerable | Red Hat |
| cpe:2.3:a:redhat:single_sign-on:7.2:*:*:*:*:*:*:* | 7.2 | Vulnerable | Red Hat |
| cpe:2.3:o:redhat:enterprise_linux:6.0:*:*:*:*:*:*:* | 6.0 | Running on | Red Hat |
| cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:* | 7.0 | Running on | Red Hat |
- cpe:2.3:a:redhat:keycloak:3.4.3:*:*:*:*:*:*:* Versions 3.4.3 Vulnerable ·Red Hat
- cpe:2.3:a:redhat:single_sign-on:7.2:*:*:*:*:*:*:* Versions 7.2 Vulnerable ·Red Hat
- cpe:2.3:o:redhat:enterprise_linux:6.0:*:*:*:*:*:*:* Versions 6.0 Running on ·Red Hat
- cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:* Versions 7.0 Running on ·Red Hat
Remediation
- Fix · GHSA-xvv8-8wh9-9fh2 org.keycloak:keycloak-saml-adapter-core (Maven) Fixed in 4.4.0.Final Advisory →
- Fix · GHSA-xvv8-8wh9-9fh2 org.keycloak:keycloak-services (Maven) Fixed in 4.4.0.Final Advisory →
Red Hat 4 advisories
- RHSA-2019:0877 Released 2019-04-24 · Red Hat rating ImportantRed Hat OpenShift Application Runtimes Thorntail 2.4.0 security & bug fix update
- Text-Only RHOAR
- RHSA-2018:3595 Released 2018-11-13 · Red Hat rating ModerateRed Hat Single Sign-On 7.2.5 security and bug fix update
- Red Hat Single Sign-On 7.2.5 zip
- RHSA-2018:3593 Released 2018-11-13 · Red Hat rating ModerateRed Hat Single Sign-On 7.2.5 on RHEL 7 security and bug fix update
- Red Hat Single Sign-On 7.2 for RHEL 7 Server rh-sso7-keycloak-3.4.14-1.Final_redhat_00001.1.jbcs.el7, rh-sso7-keycloak-server-3.4.14-1.Final_redhat_00001.1.jbcs.el7
Show 1 more Red Hat advisories
- RHSA-2018:3592 Released 2018-11-13 · Red Hat rating ModerateRed Hat Single Sign-On 7.2.5 on RHEL 6 security and bug fix update
- Red Hat Single Sign-On 7.2 for RHEL 6 Server rh-sso7-keycloak-3.4.14-1.Final_redhat_00001.1.jbcs.el6, rh-sso7-keycloak-server-3.4.14-1.Final_redhat_00001.1.jbcs.el6
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Fuse 7 | Affected | No fix planned: Will not fix |
| Red Hat Mobile Application Platform 4 | Affected | No fix planned: Out of support scope |
| Red Hat OpenShift Application Runtimes | Affected | No fix yet |
| Red Hat Single Sign-On 7.2 for RHEL 6 Server | Fixed | RHSA-2018:3592 |
| Red Hat Single Sign-On 7.2 for RHEL 7 Server | Fixed | RHSA-2018:3593 |
| Red Hat Single Sign-On 7.2.5 zip | Fixed | RHSA-2018:3595 |
| Text-Only RHOAR | Fixed | RHSA-2019:0877 |
Timeline
- 2026-10-02 Threatist record created from CVE-2018-10894
- 2026-10-03 Alias added: GHSA-xvv8-8wh9-9fh2
References
Advisory 5
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-2018-10894 · CVE Program
- CVE-2018-10894 · NVD
- FIRST EPSS
- GHSA-xvv8-8wh9-9fh2 · GitHub Advisory Database · CC BY 4.0
- CVE-2018-10894 · Red Hat security data · CC BY 4.0
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