CVE-2026-30843

Published: Mar 06, 2026 Last Modified: Mar 11, 2026
ExploitDB:
Other exploit source:
Google Dorks:
CRITICAL 9,3
Source: [email protected]
Attack Vector: network
Attack Complexity: low
Privileges Required: low
User Interaction: none
Confidentiality: N/A
Integrity: N/A
Availability: N/A
MEDIUM 6,5
Source: [email protected]
Attack Vector: network
Attack Complexity: low
Privileges Required: low
User Interaction: none
Scope: unchanged
Confidentiality: none
Integrity: high
Availability: none

Description

AI Translation Available

Wekan is an open source kanban tool built with Meteor. Versions 8.32 and 8.33 have a critical Insecure Direct Object Reference (IDOR) issue which could allow unauthorized users to modify custom fields across boards through its custom fields update endpoints, potentially leading to unauthorized data manipulation. The PUT /api/boards/:boardId/custom-fields/:customFieldId endpoint in Wekan validates that the authenticated user has access to the specified boardId, but the subsequent database update uses only the custom field's _id as a filter without confirming the field actually belongs to that board. This means an attacker who owns any board can modify custom fields on any other board by supplying a foreign custom field ID, and the same flaw exists in the POST, PUT, and DELETE endpoints for dropdown items under custom fields. The required custom field IDs can be obtained by exporting a board (which only needs read access), since the exported JSON includes the IDs of all board components. The authorization check is performed against the wrong resource, allowing cross-board custom field manipulation. This issue has been fixed in version 8.34.

EPSS (Exploit Prediction Scoring System)

Trend Analysis

EPSS (Exploit Prediction Scoring System)

Prevede la probabilità di sfruttamento basata su intelligence sulle minacce e sulle caratteristiche della vulnerabilità.

EPSS Score
0,0004
Percentile
0,1th
Updated

EPSS Score Trend (Last 9 Days)

639

Authorization Bypass Through User-Controlled Key

Incomplete
Abstraction: Base Structure: Simple
Common Consequences
Security Scopes Affected:
Access Control
Potential Impacts:
Bypass Protection Mechanism Gain Privileges Or Assume Identity
Applicable Platforms
All platforms may be affected
Likelihood of Exploit: High
View CWE Details
Application

Wekan by Wekan Project

Product Information
Vendor Wekan Project
Product Wekan
Version 8.33
cpe:2.3:a:wekan_project:wekan:8.33:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Application

Wekan by Wekan Project

Product Information
Vendor Wekan Project
Product Wekan
Version 8.32
cpe:2.3:a:wekan_project:wekan:8.32:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
https://github.com/wekan/wekan/commit/73eb98c57afd3d72377a1…
https://github.com/wekan/wekan/commit/73eb98c57afd3d72377a1f7160a52450ab0eeb8b
https://github.com/wekan/wekan/releases/tag/v8.34
https://github.com/wekan/wekan/releases/tag/v8.34
https://securitylab.github.com/advisories/GHSL-2026-044_Wek…
https://securitylab.github.com/advisories/GHSL-2026-044_Wekan/