CVE-2026-82834 Missing authorization in Auto Labeling Pipeline Module to Annotate a Document Automatically
Attackers can bypass access controls to bulk-delete category types in Doccano, potentially modifying project data without proper authorization.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-82834?
CVE-2026-82834 is a medium-severity missing authorization vulnerability in Doccano Auto Labeling Pipeline Module to Annotate a Document Automatically, published on 31 Aug 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
A security flaw has been discovered in Doccano Open Source Annotation Tools for Machine Learning Practitioners and Auto Labeling Pipeline Module to Annotate a Document Automatically up to 1.8.5. This affects the function LabelList of the file /v1/projects/1/category-types of the component Bulk-Delete Endpoint. Performing a manipulation results in improper access controls. Remote exploitation of the attack is possible. The exploit has been released to the public and may be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way.
Which versions are affected by CVE-2026-82834?
How do I fix CVE-2026-82834?
No fix has been published for CVE-2026-82834 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-82834 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-82834 exists.
Sources
Also known as GHSA-4x76-v872-9qwj.