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TI-2023-06202 Aliases CVE-2023-6787GHSA-c9h6-v78w-52wj

Keycloak: session hijacking via re-authentication

Priority LOW 39CWE-287Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
Required
Attack complexity
Low
Impact type
Security bypass, Spoofing
Confidentiality · integrity · availability
High · High · High
Fix status
Partial Red Hat: 2 fixed, 1 without a fix

Attack profile from CVSS 3.1 · NVD. Fix status from CNA, GitHub and Red Hat. Impact type from CWE-287 and CWE-384.

Summary

A flaw was found in Keycloak that occurs from an error in the re-authentication mechanism within org.keycloak.authentication. This flaw allows hijacking an active Keycloak session by triggering a new authentication process with the query parameter "prompt=login," prompting the user to re-enter their credentials. If the user cancels this re-authentication by selecting "Restart login," an account takeover may occur, as the new session, with a different SUB, will possess the same SID as the previous session.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00744 54th percentileScored 2026-11-07
Fix Partial keycloak: 22.0.10, 24.0.3org.keycloak:keycloak-services (Maven): 22.0.10, 24.0.3Red Hat: 2 advisoriesRed Hat: 2 fixed, 1 without a fix

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
—keycloakbefore 22.0.10; before 24.0.322.0.10, 24.0.3Patch availableCNA
Red HatRed Hat build of Keycloak 22—22.0.10-1Patch availableCNA
Red HatRed Hat build of Keycloak 22—22-13Patch availableCNA
Red HatRed Hat build of Keycloak 22—22-16Patch availableCNA
Red HatRed Hat build of Keycloak 22.0.10——Not affectedCNA
Red HatRed Hat Single Sign-On 7——No fix listedCNA
—org.keycloak:keycloak-services (Maven)before 22.0.1022.0.10Patch availableGHSA-c9h6-v78w-52wj
—org.keycloak:keycloak-services (Maven)23.0.0 to before 24.0.324.0.3Patch availableGHSA-c9h6-v78w-52wj
  • keycloak Vendor— Affected before 22.0.10; before 24.0.3 Fixed in 22.0.10, 24.0.3 Patch available CNA
  • Red Hat build of Keycloak 22 VendorRed Hat Affected — Fixed in 22.0.10-1 Patch available CNA
  • Red Hat build of Keycloak 22 VendorRed Hat Affected — Fixed in 22-13 Patch available CNA
  • Red Hat build of Keycloak 22 VendorRed Hat Affected — Fixed in 22-16 Patch available CNA
  • Red Hat build of Keycloak 22.0.10 VendorRed Hat Affected — Fixed in — Not affected CNA
  • Red Hat Single Sign-On 7 VendorRed Hat Affected — Fixed in — No fix listed CNA
  • org.keycloak:keycloak-services (Maven) Vendor— Affected before 22.0.10 Fixed in 22.0.10 Patch available GHSA-c9h6-v78w-52wj
  • org.keycloak:keycloak-services (Maven) Vendor— Affected 23.0.0 to before 24.0.3 Fixed in 24.0.3 Patch available GHSA-c9h6-v78w-52wj

CPE configurations NVD · 2

CPEVersionsRoleVendor
cpe:2.3:a:redhat:build_of_keycloak:-:*:*:*:text-only:*:*:*not specified by NVDVulnerableRed Hat
cpe:2.3:a:redhat:keycloak:*:*:*:*:*:*:*:*before 22.0.10; 23.0.0 to before 24.0.3VulnerableRed Hat
  • cpe:2.3:a:redhat:build_of_keycloak:-:*:*:*:text-only:*:*:* Versions not specified by NVD Vulnerable ·Red Hat
  • cpe:2.3:a:redhat:keycloak:*:*:*:*:*:*:*:* Versions before 22.0.10; 23.0.0 to before 24.0.3 Vulnerable ·Red Hat

Remediation

  • Fix · CNA keycloak Fixed in 22.0.10, 24.0.3
  • Fix · GHSA-c9h6-v78w-52wj org.keycloak:keycloak-services (Maven) Fixed in 22.0.10 Advisory →
  • Fix · GHSA-c9h6-v78w-52wj org.keycloak:keycloak-services (Maven) Fixed in 24.0.3 Advisory →

Red Hat 2 advisories

  • RHSA-2024:1867 Released 2024-04-16 · Red Hat rating Moderate
    Red Hat build of Keycloak 22.0.10 enhancement and security update
    • Red Hat build of Keycloak 22 rhbk/keycloak-operator-bundle, rhbk/keycloak-rhel9, rhbk/keycloak-rhel9-operator
  • RHSA-2024:1868 Released 2024-04-16 · Red Hat rating Important
    Red Hat build of Keycloak security update
    • Red Hat build of Keycloak 22.0.10

Vendor assessments

Red Hat

Red Hat rating: Moderate. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat Single Sign-On 7AffectedNo fix planned: Will not fix
Red Hat build of Keycloak 22Fixed RHSA-2024:1867
Red Hat build of Keycloak 22.0.10Fixed RHSA-2024:1868

Timeline

  1. 2026-10-02 Threatist record created from CVE-2023-6787
  2. 2026-10-03 Alias added: GHSA-c9h6-v78w-52wj

References

Advisory 6

Other 1

  • TI-2026-02223 Keycloak: keycloak: unauthorized authentication via disabled saml identity provider CVSS 3.1HIGH 8.1
  • TI-2024-01049 Keycloak: path transversal in redirection validation CVSS 3.1HIGH 8.1
  • TI-2026-13740 Keycloak-services: keycloak-services: saml idp-initiated broker login bypasses link-only restriction CVSS 3.1CRITICAL 9.8
  • TI-2026-13741 Keycloak-services: keycloak-services: saml broker metadata import disables response signature validation CVSS 3.1CRITICAL 9.1
  • TI-2026-13106 Keycloak-services: keycloak-services: dcr protocol mapper type-swap policy bypass allows privilege escalation CVSS 3.1HIGH 8.8
  • TI-2026-02631 Authentication bypass in Red Hat build of Keycloak 26.2 CVSS 3.1HIGH 8.8
See all 110 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences