CVE-2026-25561
highpriority · track · 30OT risk · elevatedEPSS 0.003 · 25 %ileEUUSEPSS · scored 2026-10-27
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
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 4.9–7.5
ssvc
A stakeholder decision — act, attend, or track — from exploitation and impact.
weaknesses
The CWE weakness classes this flaw belongs to.
affected products (2)
Products and version ranges known to be affected.
also known as (3)
Other names and identifiers for this entity.
sources
Which sources assert this record, and when.
references (11)
External citations — patches, advisories, analysis.
- https://access.redhat.com/security/cve/cve-2026-25561cnnvd
- https://github.com/wekan/wekan/commit/1d16955b6d4f0a0282e89c2c1b0415c7597019b8cnnvd
- https://github.com/wekan/wekan/releasesPatchcnnvd
- https://wekan.fi/cnnvd
- https://www.vulncheck.com/advisories/wekan-attachment-upload-object-relationship-validation-bypasscnnvd
- https://github.com/wekan/wekan/commit/1d16955b6d4f0a0282e89c2c1b0415c7597019b8enisa_euvd
- https://wekan.fi/enisa_euvd
- https://www.vulncheck.com/advisories/wekan-attachment-upload-object-relationship-validation-bypassenisa_euvd
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