Authorization bypass in Apache DolphinScheduler task instance endpoints
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, classified as CWE-863. An authenticated user with low privileges can stop or savepoint task instances in projects they are not authorized to access, through the task instance stop and savepoint endpoints.
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 operate task instance in projects they are not authorized to access through the * /dolphinscheduler/projects/{projectCode}/task-instances/{taskInstanceId}/stop * /dolphinscheduler/projects/{projectCode}/task-instances/{taskInstanceId}/savepoint 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
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
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-2026-69437 Authorization bypass in Apache DolphinScheduler task definition endpointPriority 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
Timeline
- 2026-10-08 Threatist record created from CVE-2026-66087
- 2026-10-09 Alias added: GHSA-8x8j-rj29-7qph
- 2026-10-09 CVSS score added · CISA ADP
- 2026-10-09 CISA SSVC decision points changed
References
More Apache vulnerabilities
- 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
Sources
- CVE-2026-66087 · CVE Program
- CVE-2026-66087 · NVD
- FIRST EPSS
- GHSA-8x8j-rj29-7qph · GitHub Advisory Database · CC BY 4.0
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