FKIE_CVE-2025-12627

Vulnerability from fkie_nvd - Published: 2026-08-06 08:16 - Updated: 2026-09-29 14:10
Severity
2.4 (Low) - CVSS:3.1/AV:A/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:N
Summary
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.
References
ed10eef1-636d-4fbe-9993-6890dfa878f8https://security.docs.wso2.com/en/latest/security-announcements/security-advisories/2026/WSO2-2025-4619/Vendor Advisory
Impacted products
Vendor Product Version
wso2 identity_server *
wso2 identity_server *
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "WSO2 Identity Server",
          "vendor": "WSO2",
          "versions": [
            {
              "lessThan": "7.0.0.130",
              "status": "affected",
              "version": "7.0.0",
              "versionType": "custom"
            },
            {
              "lessThan": "7.1.0.38",
              "status": "affected",
              "version": "7.1.0",
              "versionType": "custom"
            }
          ]
        },
        {
          "defaultStatus": "unknown",
          "packageName": "org.wso2.carbon.identity.inbound.auth.oauth2:org.wso2.carbon.identity.oauth",
          "product": "WSO2 Carbon OAuth",
          "vendor": "WSO2",
          "versions": [
            {
              "lessThan": "7.0.26.83",
              "status": "affected",
              "version": "7.0.26",
              "versionType": "custom"
            },
            {
              "lessThan": "7.0.259.31",
              "status": "affected",
              "version": "7.0.259",
              "versionType": "custom"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "x",
              "versionType": "custom"
            }
          ]
        }
      ],
      "source": "ed10eef1-636d-4fbe-9993-6890dfa878f8"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:wso2:identity_server:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "5D06E76F-D338-474A-A04E-71D9440E48E6",
              "versionEndExcluding": "7.0.0.130",
              "versionStartIncluding": "7.0.0",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:wso2:identity_server:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "1A73495D-37B9-498F-8FB5-4A0B6E121B76",
              "versionEndExcluding": "7.1.0.38",
              "versionStartIncluding": "7.1.0",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "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\u0027s 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."
    },
    {
      "lang": "es",
      "value": "El flujo de suplantaci\u00f3n de identidad de usuario en WSO2 Identity Server no gestiona adecuadamente los tokens de actualizaci\u00f3n asociados con sesiones suplantadas. Esto permite a un atacante que ha obtenido un token de acceso para un usuario suplantado aprovechar la concesi\u00f3n de token de actualizaci\u00f3n para obtener nuevos tokens de acceso, extendiendo su capacidad para actuar como el usuario leg\u00edtimo.\n\nUn atacante que obtiene acceso al token de acceso de un usuario suplantado puede explotar esta debilidad para renovar su autorizaci\u00f3n. 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."
    }
  ],
  "id": "CVE-2025-12627",
  "lastModified": "2026-09-29T14:10:00.117",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "ADJACENT_NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 2.4,
          "baseSeverity": "LOW",
          "confidentialityImpact": "NONE",
          "integrityImpact": "LOW",
          "privilegesRequired": "HIGH",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:A/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 0.9,
        "impactScore": 1.4,
        "source": "ed10eef1-636d-4fbe-9993-6890dfa878f8",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2025-12627",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-08-06T12:33:32.172062Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-08-06T08:16:28.063",
  "references": [
    {
      "source": "ed10eef1-636d-4fbe-9993-6890dfa878f8",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "https://security.docs.wso2.com/en/latest/security-announcements/security-advisories/2026/WSO2-2025-4619/"
    }
  ],
  "sourceIdentifier": "ed10eef1-636d-4fbe-9993-6890dfa878f8",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-613"
        }
      ],
      "source": "ed10eef1-636d-4fbe-9993-6890dfa878f8",
      "type": "Secondary"
    }
  ]
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.