FKIE_CVE-2026-42880

Vulnerability from fkie_nvd - Published: 2026-05-07 23:16 - Updated: 2026-05-11 17:46
Severity ?
9.6 (Critical) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N
Summary
Argo CD is a declarative, GitOps continuous delivery tool for Kubernetes. From versions 3.2.0 to before 3.2.11 and 3.3.0 to before 3.3.9, there is a missing authorization and data-masking gap in Argo CD's ServerSideDiff endpoint that allows an attacker with read-only access to extract plaintext Kubernetes Secret data from etcd via the Kubernetes API server's Server-Side Apply dry-run mechanism. This issue has been patched in versions 3.2.11 and 3.3.9.
References
security-advisories@github.comhttps://github.com/argoproj/argo-cd/security/advisories/GHSA-3v3m-wc6v-x4x3Exploit, Vendor Advisory
134c704f-9b21-4f2e-91b3-4a467353bcc0https://github.com/argoproj/argo-cd/security/advisories/GHSA-3v3m-wc6v-x4x3Exploit, Vendor Advisory
Impacted products
Vendor Product Version
argoproj argo_cd *
argoproj argo_cd *
To clipboard 

{
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:argoproj:argo_cd:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "7D45D78D-37C6-4090-849B-BE4B9F873741",
              "versionEndExcluding": "3.2.11",
              "versionStartIncluding": "3.2.0",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:argoproj:argo_cd:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "8A57863A-48B6-4926-87C7-6FBBE3E30A4B",
              "versionEndExcluding": "3.3.9",
              "versionStartIncluding": "3.3.0",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Argo CD is a declarative, GitOps continuous delivery tool for Kubernetes. From versions 3.2.0 to before 3.2.11 and 3.3.0 to before 3.3.9, there is a missing authorization and data-masking gap in Argo CD\u0027s ServerSideDiff endpoint that allows an attacker with read-only access to extract plaintext Kubernetes Secret data from etcd via the Kubernetes API server\u0027s Server-Side Apply dry-run mechanism. This issue has been patched in versions 3.2.11 and 3.3.9."
    }
  ],
  "id": "CVE-2026-42880",
  "lastModified": "2026-05-11T17:46:18.257",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 9.6,
          "baseSeverity": "CRITICAL",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "scope": "CHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 3.1,
        "impactScore": 5.8,
        "source": "security-advisories@github.com",
        "type": "Secondary"
      }
    ]
  },
  "published": "2026-05-07T23:16:32.450",
  "references": [
    {
      "source": "security-advisories@github.com",
      "tags": [
        "Exploit",
        "Vendor Advisory"
      ],
      "url": "https://github.com/argoproj/argo-cd/security/advisories/GHSA-3v3m-wc6v-x4x3"
    },
    {
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "tags": [
        "Exploit",
        "Vendor Advisory"
      ],
      "url": "https://github.com/argoproj/argo-cd/security/advisories/GHSA-3v3m-wc6v-x4x3"
    }
  ],
  "sourceIdentifier": "security-advisories@github.com",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-200"
        },
        {
          "lang": "en",
          "value": "CWE-212"
        }
      ],
      "source": "security-advisories@github.com",
      "type": "Secondary"
    }
  ]
}


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