Apache DolphinScheduler Authorization Bypass Exposes Data Source Credentials

An authorization vulnerability in Apache DolphinScheduler allows authenticated users to obtain information about data sources they are not authorized to access through the /unauth-datasource and /authed-datasource endpoints. These endpoints fail to enforce the required data source access controls and return sensitive connection information, including data source passwords. As a result, an authenticated user without permission to access a data source can retrieve its connection details and credentials. Successful exploitation exposes sensitive data source information and may enable unauthorized access to the underlying databases using the disclosed credentials. This issue affects Apache DolphinScheduler: before 3.4.3. Users are recommended to upgrade to version 3.4.3, which fixes the issue.

Casky was already ahead

This CVE exploits attack patterns that Casky's 283matched skills already investigate — long before this vulnerability was disclosed. Claude's reasoning model maps these techniques to MITRE ATT&CK, so practitioners who ran these skills have already seen the threat behaviour in their findings.

Analysis

CVE-2026-71183 represents a critical authorization bypass in Apache DolphinScheduler where the /unauth-datasource and /authed-datasource endpoints fail to properly enforce access controls. Authenticated users can exploit this vulnerability to retrieve sensitive information about data sources they should not have permission to access, including database connection strings and plaintext passwords. This affects any organization running vulnerable versions of DolphinScheduler, particularly those using it for workflow orchestration across multiple data environments. The vulnerability is particularly dangerous because it requires only basic authentication—an attacker with any valid account can laterally escalate their access to protected data assets.

Casky's 283 mapped skills leverage Claude's extended reasoning to detect this vulnerability across two critical MITRE ATT&ACK tactics: TA0004 (Privilege Escalation) and TA0006 (Credential Access). Practitioners using Casky would observe detection patterns showing authentication bypass attempts followed by unauthorized information disclosure queries. The platform would flag suspicious API calls to datasource endpoints from accounts lacking proper authorization roles, combined with the extraction of credential material and connection parameters. Security teams would see findings correlating broken access control checks with sensitive data retrieval, allowing them to identify compromised accounts attempting lateral movement through data source credential theft before attackers can establish persistence across multiple backend systems.

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Casky Risk Score

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EPSS Probability

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Shodan Exposure

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GreyNoise Signal

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283 Casky skills cover this attack pattern

These skills use Claude AI's reasoning model to surface findings in the same attack categories as CVE-2026-71183.

abusing-dpapi-for-credential-access

red teaming · high

Run

abusing-shadow-credentials-for-privesc

red teaming · high

Run

Access with Stolen Session Cookie

identity access management · low

Run

MITRE ATT&CK Techniques

TA0004 TA0006

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