Session fixation in Red Hat keycloak
Priority LOW 39CWE-384Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- Spoofing, Security bypass
- Confidentiality · integrity · availability
- High · High · None
- Fix status
- Fixed
Attack profile from CVSS 3.0 · NVD. Fix status from CNA, GitHub and Red Hat. Impact type from CWE-384 and CWE-287.
Summary
It was found that the keycloak before 2.3.0 did not implement authentication flow correctly. An attacker could use this flaw to construct a phishing URL, from which he could hijack the user's session. This could lead to information disclosure, or permit further possible attacks.
Why it matters now
EPSS 0.01679 77th percentileScored 2026-11-07
Fix Fixed org.keycloak:keycloak-core (Maven): 2.3.0Red Hat: 1 advisory
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 | 2.3.0 | — | No fix listed | CNA |
| — | org.keycloak:keycloak-core (Maven) | before 2.3.0 | 2.3.0 | Patch available | GHSA-95m6-mjh3-58gm |
- keycloak VendorRed Hat Affected 2.3.0 Fixed in — No fix listed CNA
- org.keycloak:keycloak-core (Maven) Vendor— Affected before 2.3.0 Fixed in 2.3.0 Patch available GHSA-95m6-mjh3-58gm
Remediation
- Fix · GHSA-95m6-mjh3-58gm org.keycloak:keycloak-core (Maven) Fixed in 2.3.0 Advisory →
Red Hat 1 advisory
- RHSA-2016:2945 Released 2016-12-13 · Red Hat rating ImportantRed Hat Single Sign-On security update
- Red Hat Single Sign-On 7.0
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 7.0 | Fixed | RHSA-2016:2945 |
Not affected: 1 product
- Red Hat Single Sign-On 7
Timeline
- 2026-10-02 Threatist record created from CVE-2016-8609
- 2026-10-03 Alias added: GHSA-95m6-mjh3-58gm
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-2016-8609 · CVE Program
- CVE-2016-8609 · NVD
- FIRST EPSS
- GHSA-95m6-mjh3-58gm · GitHub Advisory Database · CC BY 4.0
- CVE-2016-8609 · Red Hat security data · CC BY 4.0
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