CVE-2026-52890

Description

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.

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Produits concernés

• wekan

Scores CVSS

Faiblesses (CWE)

• CWE-22
• CWE-400

Références

• https://github.com/wekan/wekan/commit/fc92b342ceedcf38dbd614a0f7b50d6dc2b22eb8
• https://github.com/wekan/wekan/releases/tag/v9.31
• https://github.com/wekan/wekan/security/advisories/GHSA-g6vm-7757-pr88
• https://github.com/wekan/wekan/security/advisories/GHSA-g6vm-7757-pr88

Ailleurs

• NVD
• CVE.org
• CIRCL Vulnerability-Lookup
• CERT-FR
• GitHub Advisories