---
id: CVE-2026-110118
title: >-
  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
summary: >-
  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 k…
severity: medium
cvss: 6.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N'
cwe:
  - CWE-639
published: '2026-10-13'
updated: '2026-10-13'
sourceUpdated: '2026-10-13T17:17:36.130'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-110118'
references:
  - url: >-
      https://github.com/risesoft-y9/WorkFlow-Engine/blob/v9.6.11/y9-module-flowableui/risenet-y9boot-support-flowableui/src/main/java/net/risesoft/controller/buttonOperation/ButtonOperationRestController.java#L1035-L1054
    label: disclosure@vulncheck.com
  - url: >-
      https://github.com/risesoft-y9/WorkFlow-Engine/blob/v9.6.11/y9-module-flowableui/risenet-y9boot-support-flowableui/src/main/java/net/risesoft/controller/buttonOperation/ButtonOperationRestController.java#L216-L252
    label: disclosure@vulncheck.com
  - url: >-
      https://github.com/risesoft-y9/WorkFlow-Engine/blob/v9.6.11/y9-module-processadmin/risenet-y9boot-support-processadmin/src/main/java/net/risesoft/service/impl/CustomTaskServiceImpl.java#L76-L79
    label: disclosure@vulncheck.com
  - url: >-
      https://hackmd.io/@1ExmmukzRMWN7B4gQ4W-4Q/workflow-engine-task-op-missing-authz
    label: disclosure@vulncheck.com
  - url: >-
      https://www.vulncheck.com/advisories/workflow-engine-through-9.6.11-missing-authorization-via-flowableui-buttonoperation-endpoints
    label: disclosure@vulncheck.com
tags:
  - nvd
ingestedAt: '2026-10-13T17:38:53.189Z'
---

## Overview

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.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.