CVE-2026-72575
Received Received - Intake

Improper Authorization in Daptin Allows Unauthenticated CRUD Access to Usergroups

Publication date: 2026-08-10

Last updated on: 2026-08-10

Assigner: 309f9ea4-e3e9-4c6c-b79d-e8eb01244f2c

Description
An improper authorization vulnerability in daptin through v0.12.34 allows unauthenticated remote attackers to read, create, update, and delete usergroup records. The permission check functions (CanRead, CanPeek, CanCreate, CanUpdate, CanDelete, CanRefer) in server/permission/permission.go return true whenever p.UserId equals the requesting userId, but fail to reject the null/zero reference — unlike CanExecute, which explicitly guards it.

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Meta Information

Published
2026-08-10
Last Modified
2026-08-10
Generated
2026-08-10
AI Q&A
2026-08-10
EPSS Evaluated
N/A
NVD
CVE-2026-72575
EUVD
EUVD-2026-55231

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
daptin daptin 0.12.34

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.

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Executive Summary

This vulnerability is an improper authorization flaw in daptin through version 0.12.34. It allows unauthenticated remote attackers to perform full CRUD operations (create, read, update, delete) on usergroup records without proper permissions. The issue occurs because permission check functions incorrectly grant access when the UserId is null, which happens for usergroup rows that have no owner. An unauthenticated guest with a null UserId can exploit this to manipulate all usergroup objects.

Detection Guidance

Check if Daptin is running by inspecting open ports (default 6000-7000) or process names. Review logs for unauthorized CRUD operations on usergroup records. Use API calls to test if unauthenticated requests can access or modify usergroup data.

Impact Analysis

This vulnerability allows attackers to read, modify, or delete sensitive usergroup data without authentication. They could escalate privileges, disrupt services, or gain unauthorized access to system resources. The high CVSS score (9.1) indicates severe impact, including potential data breaches or system compromise.

Compliance Impact

This vulnerability likely violates compliance requirements for data protection and access control. GDPR mandates strict authorization controls for personal data access, while HIPAA requires safeguards to prevent unauthorized data modification or deletion. Exploitation could lead to non-compliance, legal penalties, and reputational damage.

Mitigation Strategies

Upgrade Daptin to the latest version beyond v0.12.34. Restrict network access to Daptin instances via firewalls. Audit and remove any exposed usergroup data. Monitor for suspicious API activity.

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