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CVE-2025-12627

Estado: AnalizadaBaja (2.4)—

The user impersonation flow in WSO2 Identity Server fails to properly manage refresh tokens associated with impersonated sessions. This allows an attacker who has obtained an access token for an impersonated user to leverage the refresh token grant to obtain new access tokens, extending their ability to act as the legitimate user.

An attacker who gains access to an impersonated user's access token can exploit this weakness to renew their authorization. This results in the continued ability to perform actions on behalf of the actual user, compromising log integrity and traceability by masking the true actor.

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)

Wso2 — Identity Server

CWE

Referencias

JSON original (NVD)

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  "id": "CVE-2025-12627",
  "cveTags": [],
  "metrics": {
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        "ssvcData": {
          "id": "CVE-2025-12627",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2026-08-06T12:33:32.172062Z"
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          "vectorString": "CVSS:3.1/AV:A/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:N",
          "integrityImpact": "LOW",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "NONE",
          "privilegesRequired": "HIGH",
          "confidentialityImpact": "NONE"
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  "published": "2026-08-06T08:16:28.063",
  "references": [
    {
      "url": "https://security.docs.wso2.com/en/latest/security-announcements/security-advisories/2026/WSO2-2025-4619/",
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        "Vendor Advisory"
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  "vulnStatus": "Analyzed",
  "weaknesses": [
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      "description": [
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          "value": "CWE-613"
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      "lang": "en",
      "value": "The user impersonation flow in WSO2 Identity Server fails to properly manage refresh tokens associated with impersonated sessions. This allows an attacker who has obtained an access token for an impersonated user to leverage the refresh token grant to obtain new access tokens, extending their ability to act as the legitimate user.\n\nAn attacker who gains access to an impersonated user's access token can exploit this weakness to renew their authorization. This results in the continued ability to perform actions on behalf of the actual user, compromising log integrity and traceability by masking the true actor."
    },
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      "lang": "es",
      "value": "El flujo de suplantación de identidad de usuario en WSO2 Identity Server no gestiona adecuadamente los tokens de actualización asociados con sesiones suplantadas. Esto permite a un atacante que ha obtenido un token de acceso para un usuario suplantado aprovechar la concesión de token de actualización para obtener nuevos tokens de acceso, extendiendo su capacidad para actuar como el usuario legítimo.\n\nUn atacante que obtiene acceso al token de acceso de un usuario suplantado puede explotar esta debilidad para renovar su autorización. Esto resulta en la capacidad continua de realizar acciones en nombre del usuario real, comprometiendo la integridad y trazabilidad del registro al enmascarar al verdadero actor."
    }
  ],
  "lastModified": "2026-09-29T14:10:00.117",
  "configurations": [
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      "nodes": [
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          "negate": false,
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