CVE-2026-25561
Authorization Bypass in WeKan Attachment Upload API Allows Unauthorized Uploads
Publication date: 2026-02-07
Last updated on: 2026-02-10
Assigner: VulnCheck
Description
Description
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| wekan_project | wekan | to 8.19 (exc) |
Helpful Resources
Exploitability
| CWE ID | Description |
|---|---|
| CWE-863 | The product performs an authorization check when an actor attempts to access a resource or perform an action, but it does not correctly perform the check. |
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?
This vulnerability exists in Wekan versions prior to 8.19 and involves an authorization weakness in the attachment upload API.
The API does not fully validate that the provided identifiers—such as boardId, cardId, swimlaneId, and listId—are consistent and correctly related to each other within the card and board structure.
This flaw enables attackers to attempt uploading attachments with mismatched or incorrect object relationships, potentially bypassing intended access controls.
How can this vulnerability impact me? :
The vulnerability can allow unauthorized users with some level of privileges to upload attachments to cards or boards they should not have access to.
This could lead to unauthorized data being introduced into the system, potential data integrity issues, and possible exposure or manipulation of information within the Wekan application.
How does this vulnerability affect compliance with common standards and regulations (like GDPR, HIPAA)?:
I don't know
How can this vulnerability be detected on my network or system? Can you suggest some commands?
I don't know
What immediate steps should I take to mitigate this vulnerability?
I don't know