CVE-2026-66082

Status: DeferredMedium (6.5)—

An authorization bypass vulnerability in Apache DolphinScheduler allows authenticated users to perform unauthorized operations on workflow schedules, workflow definitions, and task instances in other projects.

The affected endpoints check permissions against the supplied projectCode but fail to verify that the target resource belongs to that project. An authenticated user with the required permissions in one project can supply that project's code together with a resource identifier from another project, bypassing the target project's access restrictions.

The affected endpoints include:

POST /projects/{projectCode}/schedules/{id}/online and /offline: Activate or deactivate workflow schedules in another project.

Read full descriptionShow less

POST /projects/{projectCode}/workflow-definition/{code}/release: Change the ONLINE/OFFLINE state of workflow definitions in another project.

Successful exploitation allows users to alter workflow availability and interfere with task execution in projects they are not authorized to access.

This issue affects Apache DolphinScheduler: before 3.4.3.

Users are recommended to upgrade to version 3.4.3, which fixes the issue.

Technical details traces, logs and code from the original report

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CVSS

Version: 3.1
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
Base score: 6.5

Exploitation probability (EPSS)

Probability of exploitation in the next 30 days: 0.30%
Percentile among all scored CVEs: 21
Score date: 10/13/2026

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).

🎯 ATT&CK techniques

How this vulnerability is exploited and what the attacker gains, in MITRE ATT&CK terms.

ExploitationT1210 Exploitation of Remote Serviceslateral movement75 %
Primary impactT1078 Valid Accountsstealth · persistence · privilege escalation · initial access80 %
Secondary impactT1565.001 Stored Data Manipulationimpact70 %

Vulnerabilidad de escalada lateral en servicio remoto (Apache DolphinScheduler) que requiere autenticación previa (PR:L). Usuario autenticado bypasea controles de autorización modificando parámetros (projectCode) para acceder a recursos en otros proyectos, logrando alterar estados de workflows y tar

Inferred by our analysis agent from the official description, CVSS vector and CWE, and checked by a supervisor. May contain errors.

🛡️ ATT&CK mitigations that cover these techniques

Privileged Account Management Application Developer Guidance Active Directory Configuration Vulnerability Scanning User Training User Account Management

Affected technologies (1)

⚠ AI-inferred from the description — NVD hasn't analyzed this CVE yet, these aren't verified CPEs.

Apache — Dolphinscheduler^AI

CWEs

CWE-863

References

Raw JSON (NVD)

Show

{
  "id": "CVE-2026-66082",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-66082",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2026-10-08T20:19:32.670199Z"
        }
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 6.5,
          "attackVector": "NETWORK",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "NONE",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "NONE"
        },
        "impactScore": 3.6,
        "exploitabilityScore": 2.8
      }
    ]
  },
  "affected": [
    {
      "source": "security@apache.org",
      "affectedData": [
        {
          "vendor": "Apache Software Foundation",
          "product": "Apache DolphinScheduler",
          "versions": [
            {
              "status": "affected",
              "version": "0",
              "lessThan": "3.4.3",
              "versionType": "semver"
            }
          ],
          "packageURL": "pkg:maven/org.apache.dolphinscheduler/dolphinscheduler-api",
          "packageName": "org.apache.dolphinscheduler:dolphinscheduler-api",
          "collectionURL": "https://repo.maven.apache.org/maven2",
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        }
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  "published": "2026-10-08T09:16:41.637",
  "references": [
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      "source": "security@apache.org"
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      "url": "http://www.openwall.com/lists/oss-security/2026/10/08/1",
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  "vulnStatus": "Deferred",
  "weaknesses": [
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  "descriptions": [
    {
      "lang": "en",
      "value": "An authorization bypass vulnerability in Apache DolphinScheduler allows authenticated users to perform unauthorized operations on workflow schedules, workflow definitions, and task instances in other projects.\n\n\n\nThe affected endpoints check permissions against the supplied projectCode but fail to verify that the target resource belongs to that project. An authenticated user with the required permissions in one project can supply that project's code together with a resource identifier from another project, bypassing the target project's access restrictions.\n\n\n\nThe affected endpoints include:\n\n  *  \n\nPOST /projects/{projectCode}/schedules/{id}/online and /offline: Activate or deactivate workflow schedules in another project.\n\n\n  *  \n\nPOST /projects/{projectCode}/workflow-definition/{code}/release: Change the ONLINE/OFFLINE state of workflow definitions in another project.\n\n\n\n\n\n\nSuccessful exploitation allows users to alter workflow availability and interfere with task execution in projects they are not authorized to access.\n\n\n\nThis issue affects Apache DolphinScheduler: before 3.4.3.\n\n\n\nUsers are recommended to upgrade to version 3.4.3, which fixes the issue."
    }
  ],
  "lastModified": "2026-10-08T21:18:01.803",
  "sourceIdentifier": "security@apache.org"
}