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CVE-2026-0707

Estado: AplazadaMedia (5.3)—

A flaw was found in Keycloak. The Keycloak Authorization header parser is overly permissive regarding the formatting of the "Bearer" authentication scheme. It accepts non-standard characters (such as tabs) as separators and tolerates case variations that deviate from RFC 6750 specifications.

CVSS

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

Tecnologías afectadas (1)

⚠ Inferidas por IA a partir de la descripción — NVD aún no ha analizado esta CVE; no son CPE verificados.

Keycloak — KeycloakAI

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2026-0707",
  "cveTags": [],
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          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2026-01-08T15:54:59.827077Z"
        }
      }
    ],
    "cvssMetricV31": [
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        "type": "Secondary",
        "source": "secalert@redhat.com",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 5.3,
          "attackVector": "NETWORK",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N",
          "integrityImpact": "LOW",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "NONE",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "NONE"
        },
        "impactScore": 1.4,
        "exploitabilityScore": 3.9
      }
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  "affected": [
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      "source": "secalert@redhat.com",
      "affectedData": [
        {
          "cpes": [
            "cpe:/a:redhat:build_keycloak:26.4::el9"
          ],
          "vendor": "Red Hat",
          "product": "Red Hat build of Keycloak 26.4",
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              "version": "26.4.10-1",
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          "packageName": "rhbk/keycloak-rhel9",
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  "published": "2026-01-08T04:15:56.520",
  "references": [
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      "url": "https://access.redhat.com/errata/RHSA-2026:3947",
      "source": "secalert@redhat.com"
    },
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      "url": "https://access.redhat.com/errata/RHSA-2026:3948",
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    },
    {
      "url": "https://github.com/keycloak/keycloak/issues/49433",
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  "vulnStatus": "Deferred",
  "weaknesses": [
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      "description": [
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    }
  ],
  "lastModified": "2026-06-17T10:11:14.560",
  "sourceIdentifier": "secalert@redhat.com"
}