Auth bypass in Risesoft-Y9 Workflow-Engine
CVE-2026-110118
WorkFlow-Engine through 9.6.11 contains a missing authorization vulnerability that allows authenticated users to complete or reassign other users' workflow tasks via /vue/buttonOperation endpoints. Low-privileged attackers can supply a known taskId to the complete, completeTask or reAssign handlers to approve tasks or reassign them without authority.
Vulnerability class: IDOR (Insecure Direct Object Reference)
Published .
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:N/I:H/A:N.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
Weakness classification (CWE)
References
- hackmd.io/@1ExmmukzRMWN7B4gQ4W-4Q/workflow-engine-task-op-missing-authz (third-party-advisory)
- github.com/risesoft-y9/WorkFlow-Engine/blob/v9.6.11/y9-module-flowableui/risene… (technical-description)
- github.com/risesoft-y9/WorkFlow-Engine/blob/v9.6.11/y9-module-flowableui/risene… (technical-description)
- github.com/risesoft-y9/WorkFlow-Engine/blob/v9.6.11/y9-module-processadmin/rise… (technical-description)
- www.vulncheck.com/advisories/workflow-engine-through-9.6.11-missing-authorizati… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-110118?
- CVE-2026-110118 is a medium-severity vulnerability in Risesoft-Y9 Workflow-Engine, classified under Authorization Bypass Through User-Controlled Key. CVSS score: 6.5/10. Published 2026-10-13.
- How severe is CVE-2026-110118?
- Medium severity. CVSS v3 base score is 6.5 out of 10.