CVE-2026-25561

High

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.

SeverityHigh

CVSS7.5

Exploit probability—

ProductWekan

PublishedFeb 7, 2026

First seenFeb 7, 2026

Weakness typeCWE-863Incorrect authorization

How to fix

Update

wekan_project wekan8.19 or later

Patches

github.com/wekan/wekan/commit/1d16955b6d4f0a0282e89c2c1b0415c7597019b8

Affected products

Product	Affected versions	Fixed in
wekan_project wekan	v < 8.19	8.19

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