FKIE_CVE-2026-2092

Vulnerability from fkie_nvd - Published: 2026-03-18 02:16 - Updated: 2026-03-18 14:52
Severity ?
7.7 (High) - CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:L/A:L
Summary
A flaw was found in Keycloak. Keycloak's Security Assertion Markup Language (SAML) broker endpoint does not properly validate encrypted assertions when the overall SAML response is not signed. An attacker with a valid signed SAML assertion can exploit this by crafting a malicious SAML response. This allows the attacker to inject an encrypted assertion for an arbitrary principal, leading to unauthorized access and potential information disclosure.
References
secalert@redhat.comhttps://access.redhat.com/errata/RHSA-2026:3925
secalert@redhat.comhttps://access.redhat.com/errata/RHSA-2026:3926
secalert@redhat.comhttps://access.redhat.com/errata/RHSA-2026:3947
secalert@redhat.comhttps://access.redhat.com/errata/RHSA-2026:3948
secalert@redhat.comhttps://access.redhat.com/security/cve/CVE-2026-2092
secalert@redhat.comhttps://bugzilla.redhat.com/show_bug.cgi?id=2437296
Impacted products
Vendor Product Version
To clipboard 

{
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "A flaw was found in Keycloak. Keycloak\u0027s Security Assertion Markup Language (SAML) broker endpoint does not properly validate encrypted assertions when the overall SAML response is not signed. An attacker with a valid signed SAML assertion can exploit this by crafting a malicious SAML response. This allows the attacker to inject an encrypted assertion for an arbitrary principal, leading to unauthorized access and potential information disclosure."
    },
    {
      "lang": "es",
      "value": "Se encontr\u00f3 una vulnerabilidad en Keycloak. El endpoint del broker de Security Assertion Markup Language (SAML) de Keycloak no valida correctamente las aserciones cifradas cuando la respuesta SAML general no est\u00e1 firmada. Un atacante con una aserci\u00f3n SAML firmada v\u00e1lida puede explotar esto al crear una respuesta SAML maliciosa. Esto permite al atacante inyectar una aserci\u00f3n cifrada para un principal arbitrario, lo que lleva a un acceso no autorizado y a una potencial revelaci\u00f3n de informaci\u00f3n."
    }
  ],
  "id": "CVE-2026-2092",
  "lastModified": "2026-03-18T14:52:44.227",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "HIGH",
          "attackVector": "NETWORK",
          "availabilityImpact": "LOW",
          "baseScore": 7.7,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "LOW",
          "privilegesRequired": "LOW",
          "scope": "CHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:L/A:L",
          "version": "3.1"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 5.3,
        "source": "secalert@redhat.com",
        "type": "Primary"
      }
    ]
  },
  "published": "2026-03-18T02:16:24.577",
  "references": [
    {
      "source": "secalert@redhat.com",
      "url": "https://access.redhat.com/errata/RHSA-2026:3925"
    },
    {
      "source": "secalert@redhat.com",
      "url": "https://access.redhat.com/errata/RHSA-2026:3926"
    },
    {
      "source": "secalert@redhat.com",
      "url": "https://access.redhat.com/errata/RHSA-2026:3947"
    },
    {
      "source": "secalert@redhat.com",
      "url": "https://access.redhat.com/errata/RHSA-2026:3948"
    },
    {
      "source": "secalert@redhat.com",
      "url": "https://access.redhat.com/security/cve/CVE-2026-2092"
    },
    {
      "source": "secalert@redhat.com",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2437296"
    }
  ],
  "sourceIdentifier": "secalert@redhat.com",
  "vulnStatus": "Awaiting Analysis",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-1287"
        }
      ],
      "source": "secalert@redhat.com",
      "type": "Primary"
    }
  ]
}


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