What is CVE-2026-42357?

CVE-2026-42357 is a medium-severity vulnerability in Apache Dolphinscheduler, classified under Incorrect Authorization. CVSS score: 6.5/10. Published 2026-06-17.

How severe is CVE-2026-42357?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Auth bypass in Apache Dolphinscheduler

CVE-2026-42357

Incorrect Authorization vulnerability allows users to access workflow instance information belonging to projects they do not have permission to access. This issue affects Apache DolphinScheduler versions prior to 3.4.2. Users are recommended to upgrade to version 3.4.2, which fixes this issue.

Vulnerability class: Broken Access Control

Published 2026-06-17 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N.

EPSS exploit prediction

EPSS: 0.005 (39.8th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 40th percentile — 39.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.003 · newest: 0.005 · change: +0.002

Affected products

Apache Dolphinscheduler
Apache Software Foundation Dolphinscheduler — versions 0

Weakness classification (CWE)

CWE-863 — Incorrect Authorization

References

lists.apache.org/thread/74l2rrz32w2chn7vz64313gk7ox5wjtr (vendor-advisory, Mailing List, Vendor Advisory)
af854a3a-2127-422b-91ae-364da2661108 (Mailing List, Third Party Advisory)

Frequently asked questions

What is CVE-2026-42357?: CVE-2026-42357 is a medium-severity vulnerability in Apache Dolphinscheduler, classified under Incorrect Authorization. CVSS score: 6.5/10. Published 2026-06-17.
How severe is CVE-2026-42357?: Medium severity. CVSS v3 base score is 6.5 out of 10.