EUVD-2026-83027
GHSA-wcv9-64xq-42pp
Severity by source
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Network-reachable servlet, low complexity, requires a low-privilege authenticated account (PR:L); confidentiality-only disclosure of schedule config, so I:N/A:N.
Primary rating from Vendor (VulnCheck).
CVSS VectorVendor: VulnCheck
Lifecycle Timeline
4DescriptionCVE.org
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.
Articles & Coverage 1
AnalysisAI
Azkaban through 4.0.0 fails to enforce project-level permission checks in the ScheduleServlet fetchSchedule action, letting any authenticated user read the scheduling configuration of projects they do not own or have rights to. A logged-in attacker who supplies arbitrary project and flow identifiers can retrieve execution times, cron expressions, flow parameters, and notification email lists belonging to other teams. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires a valid authenticated Azkaban account (PR:L) and access to the web server's ScheduleServlet fetchSchedule endpoint; the attacker then supplies arbitrary project and flow identifiers for projects they are not authorized to view. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | This is an authorization flaw (CWE-862, missing project permission check) in Azkaban's ScheduleServlet fetchSchedule action. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | No vendor-released patch identified at time of analysis: the referenced GitHub issue (https://github.com/azkaban/azkaban/issues/3348) and the 4.0.0 source links document the flaw but the input data contains no fix version, commit, or patched release, so verify the issue thread and the project's release page before assuming a fix exists, and if the upstream project later publishes a patched tag, upgrade azkaban-web-server to that version. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, inventory all Azkaban instances to confirm which run version 4.0.0 or earlier, restrict network access to trusted users and networks, disable or tightly limit non-essential authenticated accounts, and review ScheduleServlet fetchSchedule logs for anomalous project or flow enumeration. …
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External POC / Exploit Code
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