CVE-2026-71896 Apache Software Foundation CVE debrief

Who should care

Defenders and administrators of Apache DolphinScheduler instances should assess exposure and prioritize upgrading to version 3.4.3. They should also restrict access to the affected endpoint and monitor for unauthorized access to user account information. Additionally, they should review compensating controls for exposed systems while remediation is scheduled and verified, and track exceptions, retest remediated assets, and close the item only after is

Why it matters

The authorization vulnerability in Apache DolphinScheduler allows authenticated users to access unauthorized user account information, potentially leading to sensitive information disclosure and account enumeration. Defenders and administrators should assess exposure, prioritize upgrading to version 3.4.3, and restrict access to the affected endpoint.

• Potential unauthorized disclosure of sensitive user information
• Possible account enumeration through exploitation of the vulnerability
• Need to verify and restrict access to the /dolphinscheduler/users/list-all endpoint
• Priority on upgrading to version 3.4.3 to fix the issue

Technical summary

Apache DolphinScheduler's authorization vulnerability allows authenticated users to retrieve other users' account information through the /dolphinscheduler/users/list-all endpoint without the required permissions. The issue affects Apache DolphinScheduler before version 3.4.3. The vulnerability can lead to sensitive information disclosure and account enumeration. Defenders and administrators should assess exposure and prioritize upgrading to version 3.4.3 to mitigate the issue. They should also restrict access to the affected endpoint and monitor for unauthorized access to user account information.

Defensive priority

Upgrade to version 3.4.3 to fix the issue.

Recommended defensive actions

• Upgrade Apache DolphinScheduler to version 3.4.3
• Restrict access to the /dolphinscheduler/users/list-all endpoint
• Monitor for unauthorized access to user account information
• Review compensating controls for exposed systems while remediation is scheduled and verified
• Check relevant monitoring, detection, and logs for exposed assets that need extra review
• Track exceptions, retest remediated assets, and close the item only after evidence is documented
• Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up

Evidence notes

The CVE record and source item provide details on the authorization vulnerability in Apache DolphinScheduler. The vulnerability allows authenticated users to retrieve other users' account information through the /dolphinscheduler/users/list-all endpoint without the required permissions. The issue affects Apache DolphinScheduler before version 3.4.3. Defenders should verify and restrict access to the affected endpoint. They should also monitor for unauthorized access to user account information and prioritize upgrading to version 3.4.3

Sources and references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.