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OpenAdvisories
High · 7.1 CVE-2026-25561 EUVD-2026-5711GHSA-5q4r-452w-ggwq

WeKan < 8.19 Attachment Upload Object Relationship Validation Bypass

Published Feb 7, 2026 · Updated Jul 14, 2026 · Assigned by VulnCheck

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.

Affected products

VendorProductAffectedFixed
WeKan WeKan < 8.19 8.19

References