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CVE-2026-30847

Wekan Credential Leak via notificationUsers Publication Exposes Password Hashes and Session Tokens

Published: Mar 6, 2026Updated: Mar 11, 2026 Sources: CVE List NVDCWE-200
NVD MITRE
6.5CVSSMEDIUM
EPSS Score
0.2%
Top 85.8%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

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.

CVSS Vector Breakdown

AV:NAC:LPR:LUI:NS:UC:HI:NA:N
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:LPrivileges Required
Low
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:NIntegrity
None
A:NAvailability
None
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Weaknesses

CWE-200CWE-285

Affected Products

wekanwekan project
On-prem
Enterprise Software / collaboration-groupware
WekanWekan
On-prem
Enterprise Software / collaboration-groupware
wekan projectoss-projectEnterprise Softwareaka wekan, wekan.io
wekanoss-projectEnterprise Software

Attack Graph

Products CVE Techniques Tactics

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Exploitability

Official Patch Available

MITRE ATT&CK

1 technique
Collection
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References

https://github.com/wekan/wekan/commit/1c8667eae8b28739e43569b612ffdb2693c6b1ce
github.com
https://github.com/wekan/wekan/releases/tag/v8.34
github.com
https://securitylab.github.com/advisories/GHSL-2026-035_Wekan/
securitylab.github.com

Timeline

Published
Mar 6, 2026
Last Updated
Mar 11, 2026

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