How severe is CVE-2026-66083?

CVE-2026-66083 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2026-66083 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (13th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-66083?

CVE-2026-66083 affects Apache Dolphinscheduler. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-66083?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2026-66083 published?

CVE-2026-66083 was published on 2026-09-29 and last updated on 2026-10-06.

CVE-2026-66083

CVE-2026-66083 is a medium-severity vulnerability in Apache Dolphinscheduler with a CVSS 3.x base score of 6.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-306.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
EPSS exploit prediction: 0% (13th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-306
Affected product: Apache Dolphinscheduler
Published: 2026-09-29
Last modified: 2026-10-06

Description

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 3.4.3, which fixes the issue.

Frequently asked questions

What is CVE-2026-66083?: 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 3.4.3, which fixes the issue.
How severe is CVE-2026-66083?: CVE-2026-66083 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2026-66083 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (13th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-66083?: CVE-2026-66083 affects Apache Dolphinscheduler. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-66083?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2026-66083 published?: CVE-2026-66083 was published on 2026-09-29 and last updated on 2026-10-06.

References

Affected products (1)

cpe:2.3:a:apache:dolphinscheduler:*:*:*:*:*:*:*:*

More vulnerabilities in Apache Dolphinscheduler

CVE-2026-32966 — Critical (CVSS 9.8): DataSource API Missing Authorization Check Leads to Arbitrary Data Source Metadata Disclosure in Apache…
CVE-2024-43166 — Critical (CVSS 9.8): Incorrect Default Permissions vulnerability in Apache DolphinScheduler. This issue affects Apache DolphinScheduler:…
CVE-2024-43202 — Critical (CVSS 9.8): Exposure of Remote Code Execution in Apache Dolphinscheduler. This issue affects Apache DolphinScheduler: before…
CVE-2023-49109 — Critical (CVSS 9.8): Exposure of Remote Code Execution in Apache Dolphinscheduler. This issue affects Apache DolphinScheduler: before…
CVE-2022-45875 — Critical (CVSS 9.8): Improper validation of script alert plugin parameters in Apache DolphinScheduler to avoid remote command execution…
CVE-2022-45462 — Critical (CVSS 9.8): Alarm instance management has command injection when there is a specific command configured. It is only for logged-in…

All CVEs affecting Apache Dolphinscheduler →

Other CWE-306 (Missing Authentication for Critical Function) vulnerabilities

CVE-2026-63692 — Critical (CVSS 10.0): Dell Container Storage Modules, versions prior to 1.18.0, contain(s) a Missing Authentication for Critical Function…
CVE-2026-63688 — Critical (CVSS 10.0): Dell Container Storage Modules (CSM), versions prior to v1.18.0, contains a Missing Authentication for Critical…
CVE-2026-103956 — Critical (CVSS 10.0): Missing authentication for critical function in the authentication dependency in Loom for AWS before 1.6.1 allowed…
CVE-2026-53988 — Critical (CVSS 10.0): Dockhand before 1.0.40 contains an authentication bypass vulnerability in its git webhook endpoints that allows…
CVE-2026-85889 — Critical (CVSS 10.0): Missing authentication for critical function in Azure AI Foundry allows an unauthorized attacker to elevate privileges…
CVE-2026-92808 — Critical (CVSS 10.0): A server-side request forgery (SSRF) vulnerability exists in the UnifiedLogin service of Altium Enterprise Server. An…

Browse all CWE-306 (Missing Authentication for Critical Function) vulnerabilities →