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CVE-2026-30847— Wekan Credential Leak via notificationUsers Publication Exposes Password Hashes and Session Tokens

Quick assessment

Affected
Wekan Wekan
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.

WeKan是WeKan开源的一个看板应用程序。 WeKan 8.31.0至8.33版本存在授权问题漏洞，该漏洞源于用户文档发布时缺少字段过滤，可能导致凭据和会话令牌泄露。

AI Predicted 9.8 Difficulty: Easy EPSS 0.42% · P34
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I. Basic Information for CVE-2026-30847

Vulnerability Information
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Vulnerability Title
Wekan Credential Leak via notificationUsers Publication Exposes Password Hashes and Session Tokens
Source: CVE Program / CVE List V5
Vulnerability Description
Wekan is an open source kanban tool built with Meteor. In versions 8.31.0 through 8.33, the notificationUsers publication in Wekan publishes user documents with no field filtering, causing the ReactiveCache.getUsers() call to return all fields including highly sensitive data such as bcrypt password hashes, active session login tokens, email verification tokens, full email addresses, and any stored OAuth tokens. Unlike Meteor's default auto-publication which strips the services field for security, custom publications return whatever fields the cursor contains, meaning all subscribers receive the complete user documents. Any authenticated user who triggers this publication can harvest credentials and active session tokens for other users, enabling password cracking, session hijacking, and full account takeover. This issue has been fixed in version 8.34.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:H/SA:H
Source: CVE Program / CVE List V5
Vulnerability Type
信息暴露
Source: CVE Program / CVE List V5
Vulnerability Title
WeKan 授权问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
WeKan是WeKan开源的一个看板应用程序。 WeKan 8.31.0至8.33版本存在授权问题漏洞，该漏洞源于用户文档发布时缺少字段过滤，可能导致凭据和会话令牌泄露。
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 >= 8.31.0, < 8.34 -

II. Public POCs for CVE-2026-30847

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III. Intelligence Information for CVE-2026-30847

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Patches & Fixes for CVE-2026-30847 (1)

Vendor Advisories for CVE-2026-30847 (1)

Vendor Pages for CVE-2026-30847 (1)

Same Patch Batch · Wekan · 2026-03-06 · 5 CVEs total

CVE-2026-30846 Wekan Exposes All Global Webhook Integrations through globalwebhooks Publication
CVE-2026-30845 Wekan Exposes Sensitive Data through Lack of Field Filtering During Board Publication
CVE-2026-30844 Wekan Vulnerable to SSRF through Lack of Validation or Filtering in Attachment URL Loading
CVE-2026-30843 Wekan has Cross-Board IDOR in Custom Fields Update Endpoints

IV. Related Vulnerabilities

Same product: Wekan
Same vendor: Wekan
Same weakness: CWE-200

V. Comments for CVE-2026-30847

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