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TI-2026-69437 Aliases CVE-2026-66084GHSA-26vh-p5jc-q2mg

Authorization bypass in Apache DolphinScheduler task definition endpoint

Priority LOW 37CWE-863Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
Security bypass
Confidentiality · integrity · availability
High · High · None
Fix status
Fixed

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-863.

Summary

Apache DolphinScheduler before 3.4.3 contains an authorization bypass in the task definition with-upstream endpoint. The endpoint does not verify that the task definition belongs to the project named in the URL, so an authenticated user can modify task definitions and upstream dependencies in projects they are not authorized to access. The flaw is classified as CWE-863, Incorrect Authorization. An attacker needs a valid low-privilege account and access to at least one project.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

Description from the CNA

An authorization bypass vulnerability in Apache DolphinScheduler allows authenticated users to modify task definitions in projects they are not authorized to access through the /dolphinscheduler/projects/{projectCode}/task-definition/{code}/with-upstream endpoint. The endpoint fails to verify that the task definition identified by code belongs to the project specified by projectCode. An authenticated user can supply the code of a project they are authorized to access together with a task definition code from another project, bypassing project access restrictions and modifying the target task definition and its upstream dependencies. This vulnerability can compromise workflow integrity and disrupt task execution in unauthorized projects.This issue affects Apache DolphinScheduler: before 3.4.3. Users are recommended to upgrade to version 3.4.3, which fixes the issue.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00326 25th percentileScored 2026-11-07
Fix Fixed Apache DolphinScheduler (Apache Software Foundation): 3.4.3

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
ApacheApache DolphinSchedulerbefore 3.4.33.4.3Patch availableCNA
  • Apache DolphinScheduler VendorApache Affected before 3.4.3 Fixed in 3.4.3 Patch available CNA

CPE names Threatist (inferred) · 1

Inferred from how NVD named this product before; not given by a source.

CPEVersionsRoleVendor
cpe:2.3:a:apache:dolphinscheduler:*:*:*:*:*:*:*:*——Apache
  • cpe:2.3:a:apache:dolphinscheduler:*:*:*:*:*:*:*:* Versions — — ·Apache

Remediation

Upgrade Apache DolphinScheduler to version 3.4.3, which fixes the issue.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

  • Fix · CNA Apache DolphinScheduler (Apache Software Foundation) Fixed in 3.4.3

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Release ·

    Apache DolphinScheduler 3.4.3

    6 records Highest priority Priority LOW 6 LOW

    Other records, highest priority first

    • TI-2026-69438 Authorization bypass in Apache DolphinScheduler task instance endpointsPriority LOW 37
    • TI-2026-69441 Apache DolphinScheduler lets users read Kubernetes credentialsPriority LOW 31
    • TI-2026-69440 Apache DolphinScheduler authorization flaw exposes data source passwordsPriority LOW 31
    Show all 6 records →

Timeline

  1. 2026-10-08 Threatist record created from CVE-2026-66084
  2. 2026-10-09 Alias added: GHSA-26vh-p5jc-q2mg
  3. 2026-10-09 CVSS score added · CISA ADP
  4. 2026-10-09 CISA SSVC decision points changed

References

Advisory 1

  • TI-2025-18529 Apache Tomcat: Potential RCE and/or information disclosure and/or information corruption with partial PUT KEVCVSS 3.1CRITICAL 10.0
  • TI-2024-30292 Apache OFBiz: Confused controller-view authorization logic (forced browsing) KEVCVSS 3.1CRITICAL 9.8
  • TI-2024-26062 Apache OFBiz: Unauthenticated endpoint could allow execution of screen rendering code KEVCVSS 3.1CRITICAL 9.8
  • TI-2024-21190 Apache OFBiz: Path traversal leading to RCE KEVCVSS 3.1CRITICAL 9.8
  • TI-2024-18186 Apache HugeGraph-Server: Command execution in gremlin KEVCVSS 3.1CRITICAL 9.8
  • TI-2023-25106 Deserialization of untrusted data in Apache ActiveMQ KEVCVSS 3.1CRITICAL 10.0
See all 4053 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences