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CVE-2021-40711

Status: ModifiedMedium (5.4)—

Adobe Experience Manager version 6.5.9.0 (and earlier) is affected by a stored XSS vulnerability when creating Content Fragments. An authenticated attacker can send a malformed POST request to achieve arbitrary code execution. Malicious JavaScript may be executed in a victim’s browser when they browse to the page containing the vulnerable field.

CVSS

Exploitation probability (EPSS)

EPSS (Exploit Prediction Scoring System, FIRST) estimates how likely a vulnerability is to be exploited in the wild within 30 days. It complements CVSS (impact) and CISA KEV (confirmed exploitation).

Affected technologies (1)

Adobe — Experience Manager

CWEs

References

Raw JSON (NVD)

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{
  "id": "CVE-2021-40711",
  "cveTags": [],
  "metrics": {
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          "role": "CISA Coordinator",
          "options": [
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              "exploitation": "none"
            },
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              "automatable": "no"
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              "technicalImpact": "partial"
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          "version": "2.0.3",
          "timestamp": "2025-04-23T13:11:09.280574Z"
        }
      }
    ],
    "cvssMetricV2": [
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        "type": "Primary",
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          "vectorString": "AV:N/AC:M/Au:S/C:N/I:P/A:N",
          "authentication": "SINGLE",
          "integrityImpact": "PARTIAL",
          "accessComplexity": "MEDIUM",
          "availabilityImpact": "NONE",
          "confidentialityImpact": "NONE"
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        "acInsufInfo": false,
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        "obtainAllPrivilege": false,
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    "cvssMetricV31": [
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  "published": "2021-09-27T16:15:10.587",
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  "vulnStatus": "Modified",
  "weaknesses": [
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      "description": [
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          "value": "CWE-79"
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    },
    {
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      "description": [
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          "value": "CWE-79"
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  ],
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      "lang": "en",
      "value": "Adobe Experience Manager version 6.5.9.0 (and earlier) is affected by a stored XSS vulnerability when creating Content Fragments. An authenticated attacker can send a malformed POST request to achieve arbitrary code execution. Malicious JavaScript may be executed in a victim’s browser when they browse to the page containing the vulnerable field."
    },
    {
      "lang": "es",
      "value": "Adobe Experience Manager versiones 6.5.9.0 (y anteriores) se ve afectada por una vulnerabilidad de XSS almacenada al crear fragmentos de contenido. Un atacante autenticado puede enviar una solicitud POST malformada para lograr la ejecución de código arbitrario. El JavaScript malicioso puede ejecutarse en el navegador de la víctima cuando ésta navega a la página que contiene el campo vulnerable"
    }
  ],
  "lastModified": "2026-06-17T04:07:18.883",
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  "sourceIdentifier": "psirt@adobe.com"
}