CVE-2026-52890: high-severity vulnerability in wekan
Wekan: Arbitrary file read and server DoS via attachment versions.original.path
Published · Updated
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21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 7.1epss 0.5%
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:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:L
Affected products
wekan · wekanRelated CVEs — wekan
In the same product, most dangerous first.
CVE-2026-52891CRITICALWekan: Shell Injection via Avatar UploadEPSS 0.8%CVE-2026-55652CRITICALWekan: Header-login IP allowlist bypass via X-Forwarded-For spoofing in Wekan allows unauthenticated full account takeover (incl. admin)EPSS 0.6%CVE-2026-68560HIGHWekan:hell Injection in External Antivirus Scanner Path via asyncExecEPSS 0.6%CVE-2026-68901MEDIUMWeKan Board Export REST Endpoints: NULL Pointer Dereference on Invalid authToken Leads to Uncaught Exception / Remote Denial of ServiceEPSS 0.5%CVE-2026-68899HIGHWekan: File Upload MIME Type Validation Bypass — Stored XSS via Missing System Binary FallbackEPSS 0.5%CVE-2026-68561HIGHWekan: a low-privilege board member escalates to board admin and takes over a private board via the `sort` collection-allow ruleEPSS 0.5%