Detect Apache DolphinScheduler DataSource API Missing Authorization - Arbitrary Metadata Disclosure (CVE-2026-32966) in IBM QRadar
Apache DolphinScheduler versions before 3.4.2 contain a missing authorization check in the DataSource API endpoint. An unauthenticated or low-privileged attacker can query data source metadata including connection strings, credentials, hostnames, and database names without appropriate access controls. CVSS 9.8 critical. Public PoC available.
MITRE ATT&CK
- Tactic
- Credential Access Discovery Collection
QRadar Detection Query
SELECT
sourceip,
COUNT(*) AS request_count,
COUNT(DISTINCT "URL") AS distinct_endpoints,
MIN(starttime) AS first_seen,
MAX(starttime) AS last_seen,
"User-Agent" AS user_agent
FROM events
WHERE
LOGSOURCETYPENAME(devicetype) IN ('Apache HTTP Server', 'Microsoft IIS', 'Nginx', 'F5 BIG-IP LTM')
AND ("URL" ILIKE '%/dolphinscheduler/datasources%')
AND ("responseCode" = '200' OR "responseCode" = '201' OR "responseCode" = 200 OR "responseCode" = 201)
AND LOGSOURCETIME(starttime) > NOW() - 1 HOURS
GROUP BY
sourceip,
"User-Agent"
HAVING
COUNT(*) >= 3
OR COUNT(DISTINCT "URL") >= 2
ORDER BY request_count DESC
LAST 60 MINUTESQRadar AQL query identifying source IPs making multiple successful requests to DolphinScheduler DataSource API endpoints, potentially exploiting CVE-2026-32966 to enumerate data source credentials and metadata.
Data Sources
Required Tables
False Positives & Tuning
- Authorized penetration testers running API enumeration scans
- DolphinScheduler internal workers polling data source health
- Monitoring dashboards periodically refreshing data source status
- Backup or migration tools bulk-reading data source configurations
Other platforms for CVE-2026-32966
Testing Methodology
Validate this detection against 3 adversary techniques from Atomic Red Team. Each test below lists the behaviour to exercise and the telemetry you should expect to see. Executable commands and cleanup steps are available with Pro.
- Test 1Unauthenticated DolphinScheduler DataSource List Enumeration
Expected signal: HTTP GET request to /dolphinscheduler/datasources/list with no Authorization header; HTTP 200 response containing JSON array of data source objects with connection metadata
- Test 2DolphinScheduler DataSource Credential Extraction via getById
Expected signal: Sequential HTTP GET requests to /dolphinscheduler/datasources/[1-20] from same source IP within 10 seconds; multiple HTTP 200 responses; high distinct_endpoints count
- Test 3DolphinScheduler DataSource Verify Endpoint Credential Probe
Expected signal: HTTP POST to /dolphinscheduler/datasources/verify with JSON body containing credential parameters; outbound TCP connection from DolphinScheduler host to TARGET_DB_HOST:3306
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