Vulnerability-Lookup

CVE-2026-3429 (GCVE-0-2026-3429)

Vulnerability from cvelistv5 – Published: 2026-03-11 16:17 – Updated: 2026-03-12 16:19

Title

Org.keycloak.services.resources.account: improper access control leading to mfa deletion and account takeover in keycloak account rest api

Summary

A flaw was identified in the Account REST API of Keycloak that allows a user authenticated at a lower security level to perform sensitive actions intended only for higher-assurance sessions. Specifically, an attacker who has already obtained a victim’s password can delete the victim’s registered MFA/OTP credential without first proving possession of that factor. The attacker can then register their own MFA device, effectively taking full control of the account. This weakness undermines the intended protection provided by multi-factor authentication.

Severity ?

4.2 (Medium)


                        
                          CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N

CWE

CWE-284 - Improper Access Control

Assigner

redhat

References

URL

Tags

	https://access.redhat.com/security/cve/CVE-2026-3429	vdb-entryx_refsource_REDHAT
	https://bugzilla.redhat.com/show_bug.cgi?id=2443771	issue-trackingx_refsource_REDHAT

Impacted products

Vendor

Product

Version

Red Hat

Red Hat Build of Keycloak

cpe:/a:redhat:build_keycloak:

Red Hat	Red Hat Build of Keycloak	cpe:/a:redhat:build_keycloak:
Red Hat	Red Hat Build of Keycloak	cpe:/a:redhat:build_keycloak:
Red Hat	Red Hat JBoss Enterprise Application Platform 8	cpe:/a:redhat:jboss_enterprise_application_platform:8
Red Hat	Red Hat JBoss Enterprise Application Platform Expansion Pack	cpe:/a:redhat:jbosseapxp
Red Hat	Red Hat Single Sign-On 7	cpe:/a:redhat:red_hat_single_sign_on:7

Date Public ?

2026-03-02 00:00

Credits

Red Hat would like to thank hamayanhamayan for reporting this issue.

Show details on NVD website

JSON

To clipboard

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FKIE_CVE-2026-3429

Vulnerability from fkie_nvd - Published: 2026-03-11 17:16 - Updated: 2026-03-12 21:08

Severity ?

4.2 (Medium) - CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N

Summary

References

	URL	Tags
	secalert@redhat.com	https://access.redhat.com/security/cve/CVE-2026-3429
	secalert@redhat.com	https://bugzilla.redhat.com/show_bug.cgi?id=2443771

Impacted products

	Vendor	Product	Version

JSON

To clipboard

{
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "A flaw was identified in the Account REST API of Keycloak that allows a user authenticated at a lower security level to perform sensitive actions intended only for higher-assurance sessions. Specifically, an attacker who has already obtained a victim\u2019s password can delete the victim\u2019s registered MFA/OTP credential without first proving possession of that factor. The attacker can then register their own MFA device, effectively taking full control of the account. This weakness undermines the intended protection provided by multi-factor authentication."
    },
    {
      "lang": "es",
      "value": "Se identific\u00f3 una vulnerabilidad en la API REST de Cuentas de Keycloak que permite a un usuario autenticado con un nivel de seguridad inferior realizar acciones sensibles destinadas \u00fanicamente a sesiones de mayor garant\u00eda. Espec\u00edficamente, un atacante que ya ha obtenido la contrase\u00f1a de una v\u00edctima puede eliminar la credencial MFA/OTP registrada de la v\u00edctima sin probar primero la posesi\u00f3n de ese factor. El atacante puede entonces registrar su propio dispositivo MFA, tomando efectivamente el control total de la cuenta. Esta debilidad socava la protecci\u00f3n prevista proporcionada por la autenticaci\u00f3n multifactor."
    }
  ],
  "id": "CVE-2026-3429",
  "lastModified": "2026-03-12T21:08:22.643",
  "metrics": {
    "cvssMetricV31": [
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        "cvssData": {
          "attackComplexity": "HIGH",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 4.2,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "LOW",
          "integrityImpact": "LOW",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 1.6,
        "impactScore": 2.5,
        "source": "secalert@redhat.com",
        "type": "Primary"
      }
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  "published": "2026-03-11T17:16:59.270",
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}

GHSA-8G9R-9WJW-37J4

Vulnerability from github – Published: 2026-03-11 18:30 – Updated: 2026-03-12 17:26

Summary

Keycloak: Improper Access Control Leading to MFA Deletion and Account Takeover in Keycloak Account REST API

Details

Severity ?

4.2 (Medium)


                  
                    CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N

Show details on source website

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "Maven",
        "name": "org.keycloak:keycloak-services"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "last_affected": "26.5.5"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-3429"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-284"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-03-12T17:26:37Z",
    "nvd_published_at": "2026-03-11T17:16:59Z",
    "severity": "MODERATE"
  },
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  "id": "GHSA-8g9r-9wjw-37j4",
  "modified": "2026-03-12T17:26:37Z",
  "published": "2026-03-11T18:30:33Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-3429"
    },
    {
      "type": "WEB",
      "url": "https://github.com/keycloak/keycloak/issues/47069"
    },
    {
      "type": "WEB",
      "url": "https://access.redhat.com/security/cve/CVE-2026-3429"
    },
    {
      "type": "WEB",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2443771"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/keycloak/keycloak"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Keycloak: Improper Access Control Leading to MFA Deletion and Account Takeover in Keycloak Account REST API"
}

Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

Action not permitted

CVE-2026-3429 (GCVE-0-2026-3429)

FKIE_CVE-2026-3429

GHSA-8G9R-9WJW-37J4

Tags

Sightings

Nomenclature