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CVE-2026-68561— Wekan: a low-privilege board member escalates to board admin and takes over a private board via the `sort` collection-allow rule

Quick assessment

Affected
wekan wekan
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

WeKan是WeKan团队的一款项目管理软件。 WeKan 9.89之前版本存在安全漏洞，该漏洞源于权限验证不当，可能导致仅评论或只读成员通过发送包含sort、members、permission和title的更新操作提升为管理员、暴露私有看板并驱逐合法所有者。

CVSS 8.8 · High EPSS 0.38% · P31

Affected Version Matrix 1

VendorProduct Version RangeStatus
wekan wekan < 9.89 affected
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I. Basic Information for CVE-2026-68561

Vulnerability Information
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Vulnerability Title
Wekan: a low-privilege board member escalates to board admin and takes over a private board via the `sort` collection-allow rule
Source: CVE Program / CVE List V5
Vulnerability Description
Wekan is open source kanban built with Meteor. Prior to 9.89, the second Boards.allow({ update }) rule in server/permissions/boards.js called canUpdateBoardSort in server/lib/utils.js, which authorized any board member whenever fieldNames included sort. Because Meteor combines allow rules with OR semantics and applies the complete modifier, a comment-only or read-only member could send one Boards.update with $set values for sort, members, permission, and title, make themselves the sole board administrator, expose a private board, and evict the legitimate owner; the last-admin deny rule inspected only $pull and did not block a wholesale $set of members. Version 9.89 requires sort to be the only modified field and rejects $set member arrays that remove the last active administrator. This issue is fixed in version 9.89.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
特权管理不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
WeKan 权限许可和访问控制问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
WeKan是WeKan团队的一款项目管理软件。 WeKan 9.89之前版本存在安全漏洞，该漏洞源于权限验证不当，可能导致仅评论或只读成员通过发送包含sort、members、permission和title的更新操作提升为管理员、暴露私有看板并驱逐合法所有者。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
wekan wekan < 9.89 -

II. Public POCs for CVE-2026-68561

# POC Description Source Link Shenlong Link
AI-Generated POC Premium
Qwen3.6-35B-A3B · 8966 chars
Pro+ exclusive includes:
Vulnerability reproduction recording (real sandbox build + trigger, exclusive)
In-depth vulnerability mechanism
Trigger conditions & impact
Full executable POC code
Exploit chain & mitigation
POC zip download
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III. Intelligence Information for CVE-2026-68561

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Patches & Fixes for CVE-2026-68561 (1)

Vendor Advisories for CVE-2026-68561 (1)

Vendor Pages for CVE-2026-68561 (1)

Same Patch Batch · wekan · 2026-08-19 · 7 CVEs total

CVE-2026-68899 8.7 HIGH Wekan: File Upload MIME Type Validation Bypass — Stored XSS via Missing System Binary Fall
CVE-2026-68558 8.5 HIGH Wekan: SSRF filter bypass via DNS-resolving hostname in outgoing webhooks (incomplete fix
CVE-2026-68560 7.7 HIGH Wekan:hell Injection in External Antivirus Scanner Path via asyncExec
CVE-2026-68900 7.6 HIGH Wekan: Stored XSS in HTML board exports through a card-title second parse
CVE-2026-68901 6.5 MEDIUM WeKan Board Export REST Endpoints: NULL Pointer Dereference on Invalid authToken Leads to
CVE-2026-68559 6.5 MEDIUM Wekan: Broken access control in the Excel-export route (`/api/boards/:boardId/exportExcel`

IV. Related Vulnerabilities

Same product: wekan
Same vendor: wekan
Same weakness: CWE-269

V. Comments for CVE-2026-68561

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