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CVE-2026-82834— Doccano Open Source Annotation Tools for Machine Learning Practitioners Bulk-Delete Endpoint category-types LabelList access control

Quick assessment

Affected
Doccano Open Source Annotation Tools for Machine Learning Practitioners
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

在 Doccano（面向机器学习从业者的开源标注工具及自动标注流水线模块）1.8.5 及更早版本中发现了一个安全漏洞。该漏洞位于组件“Bulk-Delete Endpoint”的文件 中的 函数。对该函数进行操作用户会触发访问控制不当的问题。该漏洞可被远程利用，且相关利用代码（exploit）已公开，可被用于发起攻击。厂商在披露前已被联系，但未作出任何回应。

CVSS 5.4 · Medium
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I. Basic Information for CVE-2026-82834

Vulnerability Information
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Vulnerability Title
Doccano Open Source Annotation Tools for Machine Learning Practitioners Bulk-Delete Endpoint category-types LabelList access control
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
访问控制不恰当
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
Doccano Open Source Annotation Tools for Machine Learning Practitioners 1.8.0 cpe:2.3:a:doccano:open_source_annotation_tools_for_machine_learning_practitioners:*:*:*:*:*:*:*:*
Doccano Auto Labeling Pipeline Module to Annotate a Document Automatically 1.8.0 cpe:2.3:a:doccano:auto_labeling_pipeline_module_to_annotate_a_document_automatically:*:*:*:*:*:*:*:*

II. Public POCs for CVE-2026-82834

# POC Description Source Link Shenlong Link
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III. Intelligence Information for CVE-2026-82834

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Other References for CVE-2026-82834 (1)

Other References for CVE-2026-82834 (4)

IV. Related Vulnerabilities

Same product: Open Source Annotation Tools for Machine Learning Practitioners
Same vendor: Doccano
Same weakness: CWE-284

V. Comments for CVE-2026-82834

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