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CVE-2021-23347

Status: ModifiedMedium (4.8)—

The package github.com/argoproj/argo-cd/cmd before 1.7.13, from 1.8.0 and before 1.8.6 are vulnerable to Cross-site Scripting (XSS) the SSO provider connected to Argo CD would have to send back a malicious error message containing JavaScript to the user.

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)

Argoproj — Argo CD

CWEs

References

Raw JSON (NVD)

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{
  "id": "CVE-2021-23347",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 3.5,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:M/Au:S/C:N/I:P/A:N",
          "authentication": "SINGLE",
          "integrityImpact": "PARTIAL",
          "accessComplexity": "MEDIUM",
          "availabilityImpact": "NONE",
          "confidentialityImpact": "NONE"
        },
        "acInsufInfo": false,
        "impactScore": 2.9,
        "baseSeverity": "LOW",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 6.8,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": true
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "report@snyk.io",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 4.7,
          "attackVector": "NETWORK",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L",
          "integrityImpact": "LOW",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "LOW",
          "privilegesRequired": "HIGH",
          "confidentialityImpact": "LOW"
        },
        "impactScore": 3.4,
        "exploitabilityScore": 1.2
      },
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "CHANGED",
          "version": "3.1",
          "baseScore": 4.8,
          "attackVector": "NETWORK",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N",
          "integrityImpact": "LOW",
          "userInteraction": "REQUIRED",
          "attackComplexity": "LOW",
          "availabilityImpact": "NONE",
          "privilegesRequired": "HIGH",
          "confidentialityImpact": "LOW"
        },
        "impactScore": 2.7,
        "exploitabilityScore": 1.7
      }
    ]
  },
  "affected": [
    {
      "source": "report@snyk.io",
      "affectedData": [
        {
          "vendor": "n/a",
          "product": "github.com/argoproj/argo-cd/cmd",
          "versions": [
            {
              "status": "affected",
              "version": "unspecified",
              "lessThan": "1.7.13",
              "versionType": "custom"
            },
            {
              "status": "affected",
              "version": "1.8.0",
              "lessThan": "unspecified",
              "versionType": "custom"
            },
            {
              "status": "affected",
              "version": "unspecified",
              "lessThan": "1.8.6",
              "versionType": "custom"
            }
          ]
        }
      ]
    }
  ],
  "published": "2021-03-03T10:15:13.753",
  "references": [
    {
      "url": "https://github.com/argoproj/argo-cd/pull/5563",
      "tags": [
        "Patch",
        "Third Party Advisory"
      ],
      "source": "report@snyk.io"
    },
    {
      "url": "https://snyk.io/vuln/SNYK-GOLANG-GITHUBCOMARGOPROJARGOCDCMD-1078291",
      "tags": [
        "Third Party Advisory"
      ],
      "source": "report@snyk.io"
    },
    {
      "url": "https://github.com/argoproj/argo-cd/pull/5563",
      "tags": [
        "Patch",
        "Third Party Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://snyk.io/vuln/SNYK-GOLANG-GITHUBCOMARGOPROJARGOCDCMD-1078291",
      "tags": [
        "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": "The package github.com/argoproj/argo-cd/cmd before 1.7.13, from 1.8.0 and before 1.8.6 are vulnerable to Cross-site Scripting (XSS) the SSO provider connected to Argo CD would have to send back a malicious error message containing JavaScript to the user."
    },
    {
      "lang": "es",
      "value": "El paquete github.com/argoproj/argo-cd/cmd versiones anteriores a 1.7.13, versiones desde 1.8.0 y anteriores a 1.8.6, son vulnerables a un ataque de tipo Cross-site Scripting (XSS), el proveedor de SSO conectado a Argo CD tendría que devolver un mensaje de error malicioso que contiene JavaScript para el usuario"
    }
  ],
  "lastModified": "2026-06-17T03:38:35.987",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:argoproj:argo_cd:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "A5B2A3E0-5E2F-487B-8614-A23B5C9277C4",
              "versionEndExcluding": "1.7.13"
            },
            {
              "criteria": "cpe:2.3:a:argoproj:argo_cd:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "B353C097-7262-4367-9281-F5F258738AA4",
              "versionEndExcluding": "1.8.6",
              "versionStartIncluding": "1.8.0"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "report@snyk.io"
}