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CVE-2026-82879— DataEase before 2.10.26 Access Control Bypass via Share Tickets

Quick assessment

Affected
dataease dataease
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

DataEase 2.10.26 之前的版本在分享链接模块中存在多个访问控制缺陷。具体而言，门票（Ticket）未与目标分享的 UUID 绑定，因此为一个分享链接签发的有效门票可被重用于其他分享链接（涉及 及 ）。此外， 端点在密码验证通过后即可签发 LinkToken，无需提供门票，从而绕过了“门票强制”策略。另外，门票创建和删除端点（ 、 ）缺少对分享所有权的校验，导致知道其他用户门票的已认证用户可修改、重新绑定或删除该门票（可能导致服务拒绝，DoS）。同时， 允许已认证用户枚举其他用户的分享映射关系。

CVSS 6.3 · Medium

Possible ATT&CK Techniques 1 AI

T1565 · Data Manipulation
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I. Basic Information for CVE-2026-82879

Vulnerability Information
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Vulnerability Title
DataEase before 2.10.26 Access Control Bypass via Share Tickets
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
授权机制不正确
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
dataease dataease 0 ~ 2.10.26 -

II. Public POCs for CVE-2026-82879

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III. Intelligence Information for CVE-2026-82879

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Patches & Fixes for CVE-2026-82879 (1)

Other References for CVE-2026-82879 (4)

IV. Related Vulnerabilities

Same product: dataease
Same vendor: dataease
Same weakness: CWE-863

V. Comments for CVE-2026-82879

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