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CVE-2020-22789

Status: ModifiedMedium (6.1)—

Unauthenticated Stored XSS in FME Server versions 2019.2 and 2020.0 Beta allows a remote attacker to gain admin privileges by injecting arbitrary web script or HTML via the login page. The XSS is executed when an administrator accesses the logs.

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)

Safe — FME Server

CWEs

References

Raw JSON (NVD)

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{
  "id": "CVE-2020-22789",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 4.3,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:M/Au:N/C:N/I:P/A:N",
          "authentication": "NONE",
          "integrityImpact": "PARTIAL",
          "accessComplexity": "MEDIUM",
          "availabilityImpact": "NONE",
          "confidentialityImpact": "NONE"
        },
        "acInsufInfo": false,
        "impactScore": 2.9,
        "baseSeverity": "MEDIUM",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 8.6,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": true
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "CHANGED",
          "version": "3.1",
          "baseScore": 6.1,
          "attackVector": "NETWORK",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N",
          "integrityImpact": "LOW",
          "userInteraction": "REQUIRED",
          "attackComplexity": "LOW",
          "availabilityImpact": "NONE",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "LOW"
        },
        "impactScore": 2.7,
        "exploitabilityScore": 2.8
      }
    ]
  },
  "affected": [
    {
      "source": "cve@mitre.org",
      "affectedData": [
        {
          "vendor": "n/a",
          "product": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ]
    }
  ],
  "published": "2021-04-28T21:15:08.743",
  "references": [
    {
      "url": "https://community.safe.com/s/article/FME-Server-Stored-Cross-Site-Scripting-XSS-Vulnerabilities",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "cve@mitre.org"
    },
    {
      "url": "https://community.safe.com/s/article/fme-server-2019-security-update",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "cve@mitre.org"
    },
    {
      "url": "https://mexicanpentester.com/2020/04/09/vulnerabilities-in-fme-server-versions-2019-2-and-2020-0-beta-and-probably-previous-versions/",
      "tags": [
        "Exploit",
        "Third Party Advisory"
      ],
      "source": "cve@mitre.org"
    },
    {
      "url": "https://community.safe.com/s/article/FME-Server-Stored-Cross-Site-Scripting-XSS-Vulnerabilities",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://community.safe.com/s/article/fme-server-2019-security-update",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://mexicanpentester.com/2020/04/09/vulnerabilities-in-fme-server-versions-2019-2-and-2020-0-beta-and-probably-previous-versions/",
      "tags": [
        "Exploit",
        "Third Party Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-79"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Unauthenticated Stored XSS in FME Server versions 2019.2 and 2020.0 Beta allows a remote attacker to gain admin privileges by injecting arbitrary web script or HTML via the login page. The XSS is executed when an administrator accesses the logs."
    },
    {
      "lang": "es",
      "value": "Un vulnerabilidad de tipo XSS almacenado no autenticado en FME Server versiones 2019.2 y 2020.0 Beta, permite a un atacante remoto alcanzar privilegios de administrador al inyectar un script web o HTML arbitrario por medio de la página de inicio de sesión. El ataque de tipo XSS es ejecutado cuando un administrador accede a los registros"
    }
  ],
  "lastModified": "2026-06-17T03:04:23.090",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:safe:fme_server:2019.0:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "5264D5CD-EB3F-47EF-9861-4B3012319E70"
            },
            {
              "criteria": "cpe:2.3:a:safe:fme_server:2019.1:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "A88A6988-1182-443E-AD9C-5B5E2C69AC41"
            },
            {
              "criteria": "cpe:2.3:a:safe:fme_server:2019.2:beta:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "436A0102-9B74-49AE-9932-2D5BE22392A4"
            },
            {
              "criteria": "cpe:2.3:a:safe:fme_server:2020.0:beta:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "38BBB4B3-AE0D-4C6C-A632-1FAE2F8EE942"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "cve@mitre.org"
}