PatchTheCVECVE-2026-66083: The /datasources/unauth-datasource endpoint does not properly enforce data source authorization
CVE-2026-66083 is a medium-severity flaw (CVSS 6.5) affecting dolphinscheduler. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
The /datasources/unauth-datasource endpoint does not properly enforce data source authorization. An authenticated user can invoke this endpoint to obtain information about data sources they are not authorized to access. This may expose data source configuration and other sensitive metadata, depending on the fields returned by the endpoint. This issue affects Apache DolphinScheduler: before 3.4.3. Users are recommended to upgrade to version
Why this priority
- On your watchlist
A fixed release or distro patch exists.
Risk facts
| CVSS score | 6.5 (Medium) |
| Attack vector | Network (remote) |
| Attack complexity | Low |
| Privileges needed | Low |
| User interaction | None |
| EPSS exploit chance | 0.3% (top 77%) |
| CISA exploited list | No |
| Weakness | CWE-306 |
| Published | 2026-09-29 |
| Last modified | 2026-10-06 |
Last updated 2026-10-06 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score
Am I affected?
Timeline
- Published CVE record published
- Updated Record last modified
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Quick answers
How do I fix CVE-2026-66083?
dolphinscheduler: upgrade to 3.4.3. Exact commands for each OS are on this page.
Is CVE-2026-66083 being exploited?
CVE-2026-66083 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.
What does CVE-2026-66083 affect?
CVE-2026-66083 affects dolphinscheduler. Severity is medium (CVSS 6.5). The /datasources/unauth-datasource endpoint does not properly enforce data source authorization. An authenticated user can invoke this endpoint to obtain information about data sources they are not authorized to access. This may expose data
How urgent is CVE-2026-66083?
Priority 34/100. On your watchlist
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