CVE-2026-52890

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 v3 7.1 HIGH

7.1^/10

CVSS v3 : HIGH

Vector :

Exploitability : 2.8 / Impact : 4.2

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact NONE

Availability Impact LOW

Scope UNCHANGED

References

Link	Resource
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

Configurations

No configuration.

History

16 Jul 2026, 14:16

Type	Values Removed	Values Added
References	~~() https://github.com/wekan/wekan/security/advisories/GHSA-g6vm-7757-pr88 -~~	() https://github.com/wekan/wekan/security/advisories/GHSA-g6vm-7757-pr88 -

15 Jul 2026, 22:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-07-15 22:17

Updated : 2026-07-16 14:16

NVD link : CVE-2026-52890

Mitre link : CVE-2026-52890

CVE.ORG link : CVE-2026-52890

JSON object : View

Products Affected

No product.

CWE

CWE-22

Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

CWE-400

Uncontrolled Resource Consumption

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