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TI-2021-02582 Aliases CVE-2021-3637GHSA-2vp8-jv5v-6qh6

Resource allocation without limits in keycloak-model-infinispan

Priority LOW 35CWE-770Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Denial of service
Confidentiality · integrity · availability
None · None · High
Fix status
Fixed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA, GitHub and Red Hat. Impact type from CWE-770.

Summary

A flaw was found in keycloak-model-infinispan in keycloak versions before 14.0.0 where authenticationSessions map in RootAuthenticationSessionEntity grows boundlessly which could lead to a DoS attack.

Why it matters now

EPSS 0.01129 66th percentileScored 2026-11-07
Fix Fixed org.keycloak:keycloak-model-infinispan (Maven): 14.0.0Red Hat: 4 advisories

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
—keycloak-model-infinispankeycloak 14.0.0—No fix listedCNA
—org.keycloak:keycloak-model-infinispan (Maven)before 14.0.014.0.0Patch availableGHSA-2vp8-jv5v-6qh6
  • keycloak-model-infinispan Vendor— Affected keycloak 14.0.0 Fixed in — No fix listed CNA
  • org.keycloak:keycloak-model-infinispan (Maven) Vendor— Affected before 14.0.0 Fixed in 14.0.0 Patch available GHSA-2vp8-jv5v-6qh6

CPE configurations NVD · 2

CPEVersionsRoleVendor
cpe:2.3:a:redhat:keycloak:*:*:*:*:*:*:*:*before 14.0.0VulnerableRed Hat
cpe:2.3:a:redhat:single_sign-on:7.0:*:*:*:*:*:*:*7.0VulnerableRed Hat
  • cpe:2.3:a:redhat:keycloak:*:*:*:*:*:*:*:* Versions before 14.0.0 Vulnerable ·Red Hat
  • cpe:2.3:a:redhat:single_sign-on:7.0:*:*:*:*:*:*:* Versions 7.0 Vulnerable ·Red Hat

Remediation

  • Fix · GHSA-2vp8-jv5v-6qh6 org.keycloak:keycloak-model-infinispan (Maven) Fixed in 14.0.0 Advisory →

Red Hat 4 advisories

  • RHSA-2021:3534 Released 2021-09-14 · Red Hat rating Moderate
    Red Hat Single Sign-On 7.4.9 security update
    • Red Hat Single Sign-On 7.4.9
  • RHSA-2021:3527 Released 2021-09-14 · Red Hat rating Moderate
    Red Hat Single Sign-On 7.4.9 security update on RHEL 6
    • Red Hat Single Sign-On 7.4 for RHEL 6 Server rh-sso7-keycloak-9.0.15-1.redhat_00002.1.el6sso, rh-sso7-keycloak-server-9.0.15-1.redhat_00002.1.el6sso
  • RHSA-2021:3529 Released 2021-09-14 · Red Hat rating Moderate
    Red Hat Single Sign-On 7.4.9 security update on RHEL 8
    • Red Hat Single Sign-On 7.4 for RHEL 8 rh-sso7-keycloak-9.0.15-1.redhat_00002.1.el8sso, rh-sso7-keycloak-server-9.0.15-1.redhat_00002.1.el8sso
Show 1 more Red Hat advisories
  • RHSA-2021:3528 Released 2021-09-14 · Red Hat rating Moderate
    Red Hat Single Sign-On 7.4.9 security update on RHEL 7
    • Red Hat Single Sign-On 7.4 for RHEL 7 Server rh-sso7-keycloak-9.0.15-1.redhat_00002.1.el7sso, rh-sso7-keycloak-server-9.0.15-1.redhat_00002.1.el7sso

Vendor assessments

Red Hat

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

ProductStatusPlan or fix
Red Hat Single Sign-On 7.4 for RHEL 6 ServerFixed RHSA-2021:3527
Red Hat Single Sign-On 7.4 for RHEL 7 ServerFixed RHSA-2021:3528
Red Hat Single Sign-On 7.4 for RHEL 8Fixed RHSA-2021:3529
Red Hat Single Sign-On 7.4.9Fixed RHSA-2021:3534

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-3637
  2. 2026-10-03 Alias added: GHSA-2vp8-jv5v-6qh6

References

Advisory 2

  • 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
See all 97 →

Sources

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