CVE-2026-32966Network attack vector

Unauthenticated metadata disclosure via unchecked DataSource API

Published Jun 17, 2026 · Updated Jun 17, 2026

Incorrect authorization in Apache DolphinScheduler before 3.4.2 allows remote attackers to read arbitrary data source metadata through its API. The DataSourceController methods connectionTest, getDatabases, getTables, and getTableColumns invoke data-source operations without validating the caller's permission for the referenced source. No credentials or user interaction is required; disclosed metadata is the grounded consequence, with no established write or service-interruption impact.

CVSS severity9.8
Critical
EPSS probability0.39%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Incorrect authorization in Apache DolphinScheduler before 3.4.2 allows remote attackers to read arbitrary data source metadata through its API. The DataSourceController methods connectionTest, getDatabases, getTables, and getTableColumns invoke data-source operations without validating the caller's permission for the referenced source. No credentials or user interaction is required; disclosed metadata is the grounded consequence, with no established write or service-interruption impact.

The record

CVE
CVE-2026-32966
Published
Jun 17, 2026
Updated
Jun 17, 2026
Vendor
The Apache Software Foundation
Product
Apache DolphinScheduler
Classifications
CWE-863, T1213
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 17, 2026CVE publishedPublication date reported by the CVE source.
  2. Jun 17, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <3.4.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

The Apache Software Foundation · Apache DolphinSchedulerversion=0 <3.4.2

Published CVSS scores

7.5CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
9.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-863Incorrect Authorization
T1213Data from Information Repositories

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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