Auth bypass in Azkaban
CVE-2026-93737
Azkaban through 4.0.0 omits project permission checks in the ScheduleServlet fetchSchedule action, allowing authenticated users to read any project's schedule configuration. Attackers can supply arbitrary project and flow identifiers to retrieve sensitive schedule details including execution times, cron expressions, flow parameters, and notification email lists without proper authorization.
Vulnerability class: Broken Access Control
Published · last modified .
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 (45.5th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 46th percentile — 45.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: 0.000
Affected products
Weakness classification (CWE)
References
- github.com/azkaban/azkaban (product)
- github.com/azkaban/azkaban/blob/4.0.0/azkaban-web-server/src/main/java/azkaban/… (technical-description)
- github.com/azkaban/azkaban/blob/4.0.0/azkaban-web-server/src/main/java/azkaban/… (technical-description)
- github.com/azkaban/azkaban/issues/3348 (issue-tracking)
- github.com/azkaban/azkaban/releases/tag/4.0.0 (release-notes)
- www.vulncheck.com/advisories/azkaban-through-4.0.0-authorization-bypass-via-sch… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-93737?
- CVE-2026-93737 is a medium-severity vulnerability in Azkaban, classified under Missing Authorization. CVSS score: 6.5/10. Published 2026-09-18.
- How severe is CVE-2026-93737?
- Medium severity. CVSS v3 base score is 6.5 out of 10.