CVE-2026-52890
highpriority · track · 0EPSS 0.005 · 41 %ileEUEPSS · scored 2026-10-28
Wekan is open source kanban built with Meteor. Prior to 9.31, Wekan allows a logged-in board member to insert an attachment document through the /attachments/insert DDP method with attacker-controlled versions.original.path and versions.original.storage fields. The server/permissions/attachments.js insert rule checks only board write access, and FileStoreStrategyFilesystem.getReadStream() in models/lib/fileStoreStrategy.js streams the stored path without a storage-root containment check, allowing arbitrary file reads and denial of service through special files such as /dev/zero. This issue is fixed in version 9.31.
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 · 6.5–7.1
ssvc
A stakeholder decision — act, attend, or track — from exploitation and impact.
weaknesses
The CWE weakness classes this flaw belongs to.
affected products (1)
Products and version ranges known to be affected.
also known as (2)
Other names and identifiers for this entity.
sources
Which sources assert this record, and when.
references (9)
External citations — patches, advisories, analysis.
- https://github.com/wekan/wekan/commit/fc92b342ceedcf38dbd614a0f7b50d6dc2b22eb8cnnvd
- https://github.com/wekan/wekan/releases/tag/v9.31cnnvd
- https://github.com/wekan/wekan/security/advisories/GHSA-g6vm-7757-pr88cnnvd
- https://github.com/wekan/wekan/commit/fc92b342ceedcf38dbd614a0f7b50d6dc2b22eb8enisa_euvd
- https://github.com/wekan/wekan/releases/tag/v9.31enisa_euvd
- https://github.com/wekan/wekan/security/advisories/GHSA-g6vm-7757-pr88enisa_euvd
- https://github.com/wekan/wekan/commit/fc92b342ceedcf38dbd614a0f7b50d6dc2b22eb8nvd
- https://github.com/wekan/wekan/releases/tag/v9.31nvd
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