CVE-2026-82834: Doccano improper access controls in LabelList bulk-delete endpoint

Summary

A security flaw in Doccano, an open source annotation tool for machine learning practitioners, affects versions up to 1.8.5. The issue sits in the LabelList function of the Bulk-Delete Endpoint, reached through /v1/projects/1/category-types, and manipulating it results in improper access controls. The attack can be run remotely, and a public exploit has been released.

Mitigation

The source does not state a fix yet. Check the original advisory for updates.

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