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TI-2020-08655 Aliases CVE-2020-10758GHSA-52rg-hpwq-qp56

Resource allocation without limits in Keycloak

Priority LOW 37CWE-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
Partial Red Hat: 5 fixed, 1 without a fix

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

Summary

A vulnerability was found in Keycloak before 11.0.1 where DoS attack is possible by sending twenty requests simultaneously to the specified keycloak server, all with a Content-Length header value that exceeds the actual byte count of the request body.

Why it matters now

EPSS 0.01947 80th percentileScored 2026-11-07
Fix Partial org.keycloak:keycloak-parent (Maven): 11.0.1Red Hat: 5 advisoriesRed Hat: 5 fixed, 1 without a fix

SSVC decision points

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

Affected products

VendorProductAffected versionsFixed inStatusSource
—KeycloakKeycloak before 11.0.1—No fix listedCNA
—org.keycloak:keycloak-parent (Maven)before 11.0.111.0.1Patch availableGHSA-52rg-hpwq-qp56
  • Keycloak Vendor— Affected Keycloak before 11.0.1 Fixed in — No fix listed CNA
  • org.keycloak:keycloak-parent (Maven) Vendor— Affected before 11.0.1 Fixed in 11.0.1 Patch available GHSA-52rg-hpwq-qp56

CPE configurations NVD · 6

CPEVersionsRoleVendor
cpe:2.3:a:redhat:keycloak:*:*:*:*:*:*:*:*before 11.0.1VulnerableRed Hat
cpe:2.3:a:redhat:openshift_application_runtimes:-:*:*:*:text-only:*:*:*not specified by NVDVulnerableRed Hat
cpe:2.3:a:redhat:openshift_application_runtimes:1.0:*:*:*:*:*:*:*1.0VulnerableRed Hat
cpe:2.3:a:redhat:single_sign-on:-:*:*:*:text-only:*:*:*not specified by NVDVulnerableRed Hat
cpe:2.3:a:redhat:single_sign-on:7.0:*:*:*:*:*:*:*7.0VulnerableRed Hat
cpe:2.3:a:redhat:single_sign-on:7.4:*:*:*:*:*:*:*7.4VulnerableRed Hat
  • cpe:2.3:a:redhat:keycloak:*:*:*:*:*:*:*:* Versions before 11.0.1 Vulnerable ·Red Hat
  • cpe:2.3:a:redhat:openshift_application_runtimes:-:*:*:*:text-only:*:*:* Versions not specified by NVD Vulnerable ·Red Hat
  • cpe:2.3:a:redhat:openshift_application_runtimes:1.0:*:*:*:*:*:*:* Versions 1.0 Vulnerable ·Red Hat
  • cpe:2.3:a:redhat:single_sign-on:-:*:*:*:text-only:*:*:* Versions not specified by NVD Vulnerable ·Red Hat
  • cpe:2.3:a:redhat:single_sign-on:7.0:*:*:*:*:*:*:* Versions 7.0 Vulnerable ·Red Hat
  • cpe:2.3:a:redhat:single_sign-on:7.4:*:*:*:*:*:*:* Versions 7.4 Vulnerable ·Red Hat

Remediation

  • Fix · GHSA-52rg-hpwq-qp56 org.keycloak:keycloak-parent (Maven) Fixed in 11.0.1 Advisory →

Red Hat 5 advisories

  • RHSA-2020:3539 Released 2020-09-02 · Red Hat rating Important
    Red Hat build of Thorntail 2.7.1 security and bug fix update
    • Text-Only RHOAR
  • RHSA-2020:3501 Released 2020-08-18 · Red Hat rating Important
    Red Hat Single Sign-On 7.4.2 security update
    • Red Hat Single Sign-On 7.4.2
  • RHSA-2020:3497 Released 2020-08-18 · Red Hat rating Important
    Red Hat Single Sign-On 7.4.2 security update on RHEL 8
    • Red Hat Single Sign-On 7.4 for RHEL 8 rh-sso7-keycloak-9.0.5-1.redhat_00001.1.el8sso, rh-sso7-keycloak-server-9.0.5-1.redhat_00001.1.el8sso
Show 2 more Red Hat advisories
  • RHSA-2020:3496 Released 2020-08-18 · Red Hat rating Important
    Red Hat Single Sign-On 7.4.2 security update on RHEL 7
    • Red Hat Single Sign-On 7.4 for RHEL 7 Server rh-sso7-keycloak-9.0.5-1.redhat_00001.1.el7sso, rh-sso7-keycloak-server-9.0.5-1.redhat_00001.1.el7sso
  • RHSA-2020:3495 Released 2020-08-18 · Red Hat rating Important
    Red Hat Single Sign-On 7.4.2 security update on RHEL 6
    • Red Hat Single Sign-On 7.4 for RHEL 6 Server rh-sso7-keycloak-9.0.5-1.redhat_00001.1.el6sso, rh-sso7-keycloak-server-9.0.5-1.redhat_00001.1.el6sso

Vendor assessments

Red Hat

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

ProductStatusPlan or fix
Red Hat OpenShift Application RuntimesAffectedNo fix yet
Red Hat Single Sign-On 7.4 for RHEL 6 ServerFixed RHSA-2020:3495
Red Hat Single Sign-On 7.4 for RHEL 7 ServerFixed RHSA-2020:3496
Red Hat Single Sign-On 7.4 for RHEL 8Fixed RHSA-2020:3497
Red Hat Single Sign-On 7.4.2Fixed RHSA-2020:3501
Text-Only RHOARFixed RHSA-2020:3539
Not affected: 4 products
  • Red Hat Decision Manager 7
  • Red Hat Fuse 7
  • Red Hat Process Automation 7
  • Red Hat support for Spring Boot

Timeline

  1. 2026-10-02 Threatist record created from CVE-2020-10758
  2. 2026-10-03 Alias added: GHSA-52rg-hpwq-qp56

References

Patch 1

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