YunaiV yudao-cloud OAuth2TokenServiceImpl.java getAccessToken improper authentication

{
  "id": "aed0714849955e7c4897b0ec0d8e099b931e024dc681af1cd0a11ac029027a20",
  "url": "https://www.cve.org/CVERecord?id=CVE-2026-7679",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "YunaiV yudao-cloud OAuth2TokenServiceImpl.java getAccessToken improper authentication",
    "summary": "A security flaw has been discovered in YunaiV yudao-cloud up to 2026.01. This impacts the function getAccessToken of the file yudao-module-system-biz/src/main/java/io/github/ruoyi/common/oauth2/service/impl/OAuth2TokenServiceImpl.java. Performing a manipulation results in improper authentication. The attack can be initiated remotely. The exploit has been released to the public and may be used for attacks. The vendor explains: \"[W]e intentionally retain the existing generic compatibility path that accepts a valid, unexpired stored refresh token when an access-token lookup is unavailable, for integrations such as reports and WebSocket. We are not introducing strict access-token-only verification, new revocation behavior or a separate trusted-entry API. This is a retained compatibility decision, not a claim that this behavior follows the standard OAuth separation or that every identity/revocation scenario has been eliminated.\"",
    "evidence": "cve:CVE-2026-7679",
    "products": [
      {
        "name": {
          "value": "yudao-cloud",
          "evidence": "/containers/cna/affected/0/product"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": []
      }
    ],
    "severity": "high",
    "structured": {
      "id": "CVE-2026-7679",
      "aliases": [
        "CVE-2026-7679"
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "version": "4.0",
            "baseScore": 6.9,
            "baseSeverity": "MEDIUM",
            "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P"
          }
        },
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          "cvssV3_1": {
            "version": "3.1",
            "baseScore": 7.3,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:C"
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          "cvssV3_0": {
            "version": "3.0",
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            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:C"
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        {
          "cvssV2_0": {
            "version": "2.0",
            "baseScore": 7.5,
            "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P/E:POC/RL:ND/RC:C"
          }
        }
      ],
      "affected": [
        {
          "cpes": [
            "cpe:2.3:a:yunaiv:yudao-cloud:*:*:*:*:*:*:*:*"
          ],
          "vendor": "YunaiV",
          "product": "yudao-cloud",
          "versions": [
            {
              "status": "affected",
              "version": "2026.01"
            }
          ]
        }
      ],
      "modified": "2026-10-27T07:22:32.665Z",
      "provider": "cve",
      "references": [
        "https://vuldb.com/vuln/360832",
        "https://vuldb.com/vuln/360832/cti",
        "https://vuldb.com/cve/CVE-2026-7679",
        "https://vuldb.com/submit/800866",
        "https://github.com/9str0IL/CVE/issues/1"
      ],
      "provider_metadata": {
        "adp": [
          {
            "title": "CISA ADP Vulnrichment",
            "metrics": [
              {
                "other": {
                  "type": "ssvc",
                  "content": {
                    "id": "CVE-2026-7679",
                    "role": "CISA Coordinator",
                    "options": [
                      {
                        "Exploitation": "poc"
                      },
                      {
                        "Automatable": "no"
                      },
                      {
                        "Technical Impact": "partial"
                      }
                    ],
                    "version": "2.0.3",
                    "timestamp": "2026-05-04T14:55:13.779067Z"
                  }
                }
              }
            ],
            "providerMetadata": {
              "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "shortName": "CISA-ADP",
              "dateUpdated": "2026-05-04T14:55:27.068Z"
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        "cna": {
          "orgId": "1af790b2-7ee1-4545-860a-a788eba489b5",
          "shortName": "VulDB",
          "dateUpdated": "2026-10-27T07:22:32.665Z"
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    "related_cves": [
      {
        "value": "CVE-2026-7679",
        "evidence": "/cveMetadata/cveId"
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    "security_relevant": true,
    "severity_evidence": "/containers/cna/metrics"
  },
  "source_id": "core-cve",
  "document_id": 391524,
  "published_at": "2026-05-03T04:15:10.929+00:00"
}