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PatchSiren cyber security CVE debrief

CVE-2026-53446 wekan CVE debrief

CVE-2026-53446 is a MEDIUM severity vulnerability in Wekan, a open-source kanban built with Meteor, affecting versions prior to 9.32. The vulnerability allows a board administrator to configure webhook URLs that cause server-side requests to internal or metadata services due to insufficient validation of user-input URLs in the webhook integration. This issue can lead to potential unauthorized access to internal services. Users of Wekan, especially board administrators, should be aware of this vulnerability and take steps to upgrade to version 9.32 or later to prevent potential unauthorized access to internal services. The CVE record was published on 2026-07-15T22:17:17.103Z and has not been modified since then.

Vendor
wekan
Product
Unknown
CVSS
MEDIUM 6.2
CISA KEV
Not listed in stored evidence
Original CVE published
2026-07-15
Original CVE updated
2026-07-16
Advisory published
2026-07-15
Advisory updated
2026-07-16

Who should care

Users of Wekan, especially board administrators, should be aware of this vulnerability and take steps to upgrade to version 9.32 or later to prevent potential unauthorized access to internal services. Board administrators and security teams should review and validate webhook integration URLs, monitor server-side requests for suspicious activity, and plan vendor-supported updates or mitigations through normal change control where exposure is confirmed.

Technical summary

In Wekan versions prior to 9.32, the webhook integration URLs in models/integrations.js are stored from user input and later fetched by server/notifications/outgoing.js without applying the existing validateAttachmentUrl() private-network checks from models/lib/attachmentUrlValidation.js. This allows a board administrator to configure webhook URLs that cause server-side requests to internal or metadata services. The vulnerability has a CVSS score of 6.2 and a severity of MEDIUM.

Defensive priority

Medium

Recommended defensive actions

  • Upgrade Wekan to version 9.32 or later
  • Review and validate webhook integration URLs
  • Monitor server-side requests for suspicious activity
  • Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up.
  • Review the supplied official advisory or CVE record to validate affected scope, severity, and vendor guidance.
  • Plan vendor-supported updates or mitigations through normal change control where exposure is confirmed.
  • Review compensating controls for exposed systems while remediation is scheduled and verified.

Evidence notes

The CVE record was published on 2026-07-15T22:17:17.103Z and was last modified on 2026-07-16T14:16:54.083Z. The NVD entry is currently Deferred. This vulnerability affects Wekan, an open-source kanban built with Meteor, and allows a board administrator to configure webhook URLs that cause server-side requests to internal or metadata services due to insufficient validation of user-input URLs in the webhook integration. Evidence is limited, and defenders should verify affected scope and vendor guidance.

Official resources

AI-assisted PatchSiren debrief based on the supplied source corpus. The CVE record was published on 2026-07-15T22:17:17.103Z and has not been modified since then. The NVD entry is currently Deferred.