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.

Attack Vector Network

Attack Complexity Low

Privileges Required Low

Attack Requirements None

User Interaction None

Vulnerable System Confidentiality Impact None

Vulnerable System Integrity Impact High

Vulnerable System Availability Impact None

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact None

Integrity Impact High

Availability Impact None

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.0001.

Exploitation none

Automatable no

Technical Impact total

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
WeKan WeKan unaffected
Version Status Constraints
0 affected < 8.19

Configuration 1 [-]

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

No data.

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Vendors Products
Wekan Project Subscribe
Wekan Subscribe

Project Subscriptions

Vendors Products
Wekan Project Subscribe
Wekan Subscribe
Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://github.com/wekan/wekan/commit/1d16955b6d4f0a0282e89c2c1b0415c7597019b8 cve-icon cve-icon
https://wekan.fi/ cve-icon cve-icon
https://www.vulncheck.com/advisories/wekan-attachment-upload-object-relationship-validation-bypass cve-icon cve-icon
History

Tue, 10 Feb 2026 22:15:00 +0000

Type Values Removed Values Added
CPEs cpe:2.3:a:wekan_project:wekan:*:*:*:*:*:*:*:*
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N'}

Tue, 10 Feb 2026 17:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Mon, 09 Feb 2026 11:00:00 +0000

Type Values Removed Values Added
First Time appeared Wekan Project
Wekan Project wekan
Vendors & Products Wekan Project
Wekan Project wekan

Sat, 07 Feb 2026 22:00:00 +0000

Type Values Removed Values Added
Description 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.
Title WeKan < 8.19 Attachment Upload Object Relationship Validation Bypass
Weaknesses CWE-863
References
Metrics cvssV4_0

{'score': 7.1, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-02-10T16:21:04.853Z

Reserved: 2026-02-02T20:12:33.396Z

Link: CVE-2026-25561

cve-icon Vulnrichment

Updated: 2026-02-10T16:21:00.405Z

cve-icon NVD

Status : Analyzed

Published: 2026-02-07T22:16:01.490

Modified: 2026-02-10T22:02:06.320

Link: CVE-2026-25561

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-02-09T10:44:18Z

Weaknesses