---
id: CVE-2026-82879
title: >-
  DataEase before 2.10.26 contains multiple access control defects in the
  sharing link module
summary: >-
  DataEase before 2.10.26 contains multiple access control defects in the
  sharing link module. Tickets are not bound to the target share UUID, so a
  valid ticket issued for one share can be reused against another
  (ShareTicketManage.validate…
severity: medium
cvss: 6.3
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L'
cwe:
  - CWE-863
published: '2026-08-31'
updated: '2026-09-08'
sourceUpdated: '2026-09-08T20:18:59.270'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-82879'
references:
  - url: 'https://github.com/dataease/dataease'
    label: disclosure@vulncheck.com
  - url: >-
      https://github.com/dataease/dataease/commit/fbbb0482c4c10480c2dd4ecc050cd1e5c55b17db
    label: disclosure@vulncheck.com
  - url: 'https://github.com/dataease/dataease/releases/tag/v2.10.26'
    label: disclosure@vulncheck.com
  - url: >-
      https://github.com/dataease/dataease/security/advisories/GHSA-9h54-39gh-5qfg
    label: disclosure@vulncheck.com
  - url: >-
      https://www.vulncheck.com/advisories/dataease-before-2.10.26-access-control-bypass-via-share-tickets
    label: disclosure@vulncheck.com
tags:
  - nvd
epss: 0.00361
epssPercentile: 0.27106
ingestedAt: '2026-09-08T21:11:12.288Z'
---

## Overview

DataEase before 2.10.26 contains multiple access control defects in the sharing link module. Tickets are not bound to the target share UUID, so a valid ticket issued for one share can be reused against another (ShareTicketManage.validateTicket / POST /de2api/share/proxyInfo). The POST /de2api/share/validate endpoint issues a LinkToken after password verification without requiring a ticket, bypassing the 'ticket mandatory' policy. Additionally, the ticket create and delete endpoints (POST /de2api/ticket/saveTicket, POST /de2api/ticket/delTicket) lack share-ownership checks, allowing an authenticated user who knows another user's ticket to modify, rebind, or delete it (denial of service), and GET /de2api/share/queryRelationByUserId/{uid} allows authenticated users to enumerate other users' share mappings.

## Remediation

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