CVE-2026-82833
Deferred Deferred - Pending Action

Improper Access Control in Doccano Open Source Annotation Tools

Publication date: 2026-08-31

Last updated on: 2026-08-31

Assigner: VulDB

Description
A vulnerability was identified 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. Affected by this issue is the function ExampleDetail of the file /v1/projects/1/examples/ of the component Project Example Detail Endpoint. Such manipulation leads to improper access controls. The attack may be launched remotely. The exploit is publicly available and might be used. The vendor was contacted early about this disclosure but did not respond in any way.

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Meta Information

Published
2026-08-31
Last Modified
2026-08-31
Generated
2026-09-01
AI Q&A
2026-08-31
EPSS Evaluated
N/A
NVD
CVE-2026-82833
EUVD
EUVD-2026-68756

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
doccano doccano to 1.8.5 (inc)

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-284 The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor.
CWE-266 A product incorrectly assigns a privilege to a particular actor, creating an unintended sphere of control for that actor.

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Executive Summary

This vulnerability is an improper access control issue in Doccano Open Source Annotation Tools up to version 1.8.5. It affects the Project Example Detail Endpoint, specifically the ExampleDetail function in the /v1/projects/1/examples/ path. The flaw allows remote attackers to manipulate access controls, potentially leading to unauthorized actions.

Detection Guidance

Check Doccano versions up to 1.8.5 for the Project Example Detail Endpoint at /v1/projects/1/examples/. Look for improper access control issues in the ExampleDetail function. Monitor for unauthorized remote access attempts or unusual activity in project example endpoints.

Impact Analysis

The vulnerability may allow remote attackers to gain unauthorized access to sensitive data or perform actions they shouldn't. Since the exploit is publicly available, the risk of misuse is higher. Users of affected Doccano versions should update immediately to avoid potential breaches.

Compliance Impact

Improper access controls can lead to unauthorized data exposure, violating GDPR's data protection principles or HIPAA's security requirements. Organizations using vulnerable Doccano versions may face compliance violations, legal penalties, or reputational damage if sensitive data is compromised.

Mitigation Strategies

Immediately upgrade Doccano to a version beyond 1.8.5 where the vulnerability is patched. If no patch is available, restrict network access to the Project Example Detail Endpoint (/v1/projects/1/examples/) and review access controls for improper access issues.

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