CVE-2026-25561

WeKan versions prior to 8.19 contain an authorization weakness in the attachment upload API. The API does not fully validate that provided identifiers (such as boardId, cardId, swimlaneId, and listId) are consistent and refer to a coherent card/board relationship, enabling attempts to upload attachments with mismatched object relationships.

CVSS v3 7.5 HIGH

7.5^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact HIGH

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://github.com/wekan/wekan/commit/1d16955b6d4f0a0282e89c2c1b0415c7597019b8	Patch
https://wekan.fi/	Product
https://www.vulncheck.com/advisories/wekan-attachment-upload-object-relationship-validation-bypass	Third Party Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:wekan_project:wekan:*:*:*:*:*:*:*:*

History

10 Feb 2026, 22:02

Type	Values Removed	Values Added
CPE		cpe:2.3:a:wekan_project:wekan::::::::
First Time		Wekan Project wekan Wekan Project
CVSS	v2 : ~~unknown~~ v3 : ~~unknown~~	v2 : unknown v3 : 7.5
References	~~() https://github.com/wekan/wekan/commit/1d16955b6d4f0a0282e89c2c1b0415c7597019b8 -~~	() https://github.com/wekan/wekan/commit/1d16955b6d4f0a0282e89c2c1b0415c7597019b8 - Patch
References	~~() https://wekan.fi/ -~~	() https://wekan.fi/ - Product
References	~~() https://www.vulncheck.com/advisories/wekan-attachment-upload-object-relationship-validation-bypass -~~	() https://www.vulncheck.com/advisories/wekan-attachment-upload-object-relationship-validation-bypass - Third Party Advisory

07 Feb 2026, 22:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-02-07 22:16

Updated : 2026-02-10 22:02

NVD link : CVE-2026-25561

Mitre link : CVE-2026-25561

CVE.ORG link : CVE-2026-25561

JSON object : View

Products Affected

wekan_project

wekan

CWE

CWE-863

Incorrect Authorization

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