CVE-2026-120984

Description

A flaw was found in the Keycloak server's client management component. When a client is created or imported with authorization services enabled, the system fails to properly clear an internal session attribute used during the setup process. This allows an authenticated attacker with client management permissions to bypass security controls and upload a malicious JavaScript policy, which is then executed on the server when an authorization request is made. Successful exploitation could allow the attacker to run arbitrary code on the server, potentially compromising the entire system.

Overview

State: PUBLISHED
Assigner (CNA): redhat
CVSS severity: CRITICAL
CVSS score: 9.1 / 10
CVSS vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
Effective score: 9.1 / 10 CRITICAL source: CNA overview
CWE(s): CWE-94
Reserved: 2026-11-03
Published: 2026-11-07 13:22 UTC
Last updated: 2026-11-07 13:22 UTC
Source: https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/120xxx/CVE-2026-120984.json
Linked Threat: CVE-2026-120984 — Keycloak-services: keycloak-services: manage-clients to arbitrary code execution through inline javascript policy import

Affected products (3)

Vendor	Product	Versions	Platforms
Red Hat	Red Hat Build of Keycloak	—	—
Red Hat	Red Hat Build of Keycloak	—	—
Red Hat	Red Hat Single Sign-On 7	—	—

Vendor references (2)

References embedded in the original CVE record by the assigning CNA.

https://access.redhat.com/security/cve/CVE-2026-120984 vdb-entryx_refsource_REDHAT
RHBZ#2565599 issue-trackingx_refsource_REDHAT

MITRE references (2) cveawg.mitre.org

Pulled from MITRE's CVE Services API by the 🛰 Backfill from MITRE button.

https://access.redhat.com/security/cve/CVE-2026-120984 vdb-entry, x_refsource_REDHAT
RHBZ#2565599 issue-tracking, x_refsource_REDHAT

Web references (0)

DuckDuckGo results ranked by threat-intel / vendor advisory domains. Generated by the 🔎 Find references (web) button above — same flow as the Remediations search.

No web references attached yet.

Remediations (10)

Remediations are stored against the linked Threat row; the list below is deduplicated across both pages.

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2026-11-08 05:06 UTC
August 2026 Critical Security Patch Update Released - Oracle Blogs

web:blogs.oracle.com

For more information about the Critical Security Patch Update program, see the security vulnerability remediation practices page located on the Oracle Trust Center.

2026-11-08 05:06 UTC
October 2026 Critical Patch Update Released | security

web:blogs.oracle.com

For more information about the Critical Patch Update program, see the security vulnerability remediation practices page located on the Oracle Trust Center.

2026-11-08 05:06 UTC
CVE Database Search & Remediation Guidance

web:cvedatabase.com

Search and analyze CVE vulnerabilities with instant access to CVSS scores, affected products, and remediation guidance.

2026-11-08 05:06 UTC
Microsoft Patch Tracker (November 2026): Exploit-Ranked | Senserva

web:senserva.com

Every Microsoft security patch (KB) and the CVEs it fixes, with severity, CVSS, and CISA KEV status. Cross-linked to the CVE reference.

2026-11-08 05:06 UTC
CVE-2026-120984 - Authenticated JavaScript Policy Upload…

web:vulmon.com

Vulnerability Summary An authenticated attacker with client management permissions in Keycloak server can upload a malicious JavaScript policy. This bypasses security controls and enables arbitrary code execution on the server when an authorization request is made. The vulnerability stems from the system failing to clear an internal session attribute during client creation or import when ...

2026-11-08 05:06 UTC
The 8 Best Automated Vulnerability Remediation Tools in 2026

web:www.openhands.dev

Compare 8 automated vulnerability remediation tools for 2026 on fixes, prioritization, integrations, and deployment control.

2026-11-08 05:06 UTC
Oracle Critical Patch Update Advisory - July 2026

web:www.oracle.com

This Critical Patch Update contains 1448 new security patches across the product families listed below. Please note that a My Oracle Support (MOS) note summarizing the content of this Critical Patch Update and other Oracle Software Security Assurance activities is located at July 2026 Critical Patch Update: Executive Summary and Analysis.

2026-11-08 05:06 UTC
Oracle Critical Security Patch Update Advisory - September 2026

web:www.oracle.com

Prior Critical Patch Update and Critical Security Patch Update advisories should be reviewed for information regarding earlier published security patches. Refer to Critical Patch Updates, Critical Security Patch Updates, Security Alerts and Bulletins for information about Oracle Security advisories.

2026-11-08 05:06 UTC
The CVE Database: Curated Vulnerability Intelligence by Wiz | Wiz

web:www.wiz.io

Wiz's CVE Database curates CVE data to create easy-to-navigate profiles that cover the entire vulnerability timeline, exploit scenarios, and mitigation steps.

2026-11-08 05:06 UTC

AI Forensic Analysis

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Raw JSON

The full cvelistV5 record. Download as CVE-2026-120984.json.

{
  "containers": {
    "cna": {
      "affected": [
        {
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "cpes": [
            "cpe:/a:redhat:build_keycloak:"
          ],
          "defaultStatus": "affected",
          "packageName": "keycloak-services",
          "product": "Red Hat Build of Keycloak",
          "vendor": "Red Hat"
        },
        {
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "cpes": [
            "cpe:/a:redhat:build_keycloak:"
          ],
          "defaultStatus": "affected",
          "packageName": "rhbk/keycloak-rhel9",
          "product": "Red Hat Build of Keycloak",
          "vendor": "Red Hat"
        },
        {
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "cpes": [
            "cpe:/a:redhat:red_hat_single_sign_on:7"
          ],
          "defaultStatus": "affected",
          "packageName": "keycloak-services",
          "product": "Red Hat Single Sign-On 7",
          "vendor": "Red Hat"
        }
      ],
      "credits": [
        {
          "lang": "en",
          "value": "Red Hat would like to thank Nassim Abbaoui (OVHcloud) and Marcin Naskr\u0119t (UNSHADE) for reporting this issue."
        }
      ],
      "datePublic": "2026-01-07T12:00:00.000Z",
      "descriptions": [
        {
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        }
      ],
      "metrics": [
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            "confidentialityImpact": "HIGH",
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            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H",
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            "x_refsource_REDHAT"
          ],
          "url": "https://access.redhat.com/security/cve/CVE-2026-120984"
        },
        {
          "name": "RHBZ#2565599",
          "tags": [
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            "x_refsource_REDHAT"
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          "time": "2026-10-30T18:47:57.000Z",
          "value": "Reported to Red Hat."
        },
        {
          "lang": "en",
          "time": "2026-01-07T12:00:00.000Z",
          "value": "Made public."
        }
      ],
      "title": "Keycloak-services: keycloak-services: manage-clients to arbitrary code execution through inline javascript policy import",
      "workarounds": [
        {
          "lang": "en",
          "value": "Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability."
        }
      ],
      "x_generator": {
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      },
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    }
  },
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    "datePublished": "2026-11-07T13:22:00.998Z",
    "dateReserved": "2026-11-03T05:21:27.103Z",
    "dateUpdated": "2026-11-07T13:22:00.998Z",
    "state": "PUBLISHED"
  },
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}