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CVE-2021-30650

Status: ModifiedMedium (6.1)—

A reflected cross-site scripting (XSS) vulnerability in the Symantec Layer7 API Management OAuth Toolkit (OTK) allows a remote attacker to craft a malicious URL for the OTK web UI and target OTK users with phishing attacks or other social engineering techniques. A successful attack allows injecting malicious code into the OTK web UI client application.

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)

Broadcom — Layer7 API Management Oauth Toolkit

CWEs

References

Raw JSON (NVD)

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{
  "id": "CVE-2021-30650",
  "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": "secure@symantec.com",
      "affectedData": [
        {
          "vendor": "n/a",
          "product": "Layer7 API Management OAuth Toolkit (OTK)",
          "versions": [
            {
              "status": "affected",
              "version": "OTK 4.4.x and earlier"
            }
          ]
        }
      ]
    }
  ],
  "published": "2022-02-18T18:15:09.307",
  "references": [
    {
      "url": "https://support.broadcom.com/web/ecx/support-content-notification/-/external/content/SecurityAdvisories/CVE-2021-30650-Layer7-OAuth-Toolkit-OTK-/20170",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "secure@symantec.com"
    },
    {
      "url": "https://support.broadcom.com/web/ecx/support-content-notification/-/external/content/SecurityAdvisories/CVE-2021-30650-Layer7-OAuth-Toolkit-OTK-/20170",
      "tags": [
        "Vendor 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": "A reflected cross-site scripting (XSS) vulnerability in the Symantec Layer7 API Management OAuth Toolkit (OTK) allows a remote attacker to craft a malicious URL for the OTK web UI and target OTK users with phishing attacks or other social engineering techniques. A successful attack allows injecting malicious code into the OTK web UI client application."
    },
    {
      "lang": "es",
      "value": "Una vulnerabilidad de tipo cross-site scripting (XSS) reflejado en Symantec Layer7 API Management OAuth Toolkit (OTK) permite a un atacante remoto diseñar una URL maliciosa para la Interfaz de Usuario Web de OTK y dirigirse a usuarios de OTK con ataques de suplantación de identidad u otras técnicas de ingeniería social. Un ataque con éxito permite inyectar código malicioso en la aplicación cliente de la Interfaz Web de OTK."
    }
  ],
  "lastModified": "2026-06-17T03:50:37.330",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:broadcom:layer7_api_management_oauth_toolkit:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "3475FE4A-79F5-4C85-80D0-767BBF7D1F8A",
              "versionEndExcluding": "4.4.1"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "secure@symantec.com"
}