Daptin up to 0.12.34 Permission Check permission.go UserId/userId improper authorization

Summaryinfo

A vulnerability labeled as critical has been found in Daptin up to 0.12.34. The affected element is the function CanRead/CanPeek/CanCreate/CanUpdate/CanDelete/CanRefer of the file server/permission/permission.go of the component Permission Check. Such manipulation of the argument UserId/userId leads to improper authorization. This vulnerability is traded as CVE-2026-72575. The attack may be launched remotely. There is no exploit available.

Detailsinfo

A vulnerability was found in Daptin up to 0.12.34. It has been rated as critical. Affected by this issue is the function CanRead/CanPeek/CanCreate/CanUpdate/CanDelete/CanRefer of the file server/permission/permission.go of the component Permission Check. The manipulation of the argument UserId/userId with an unknown input leads to a improper authorization vulnerability. Using CWE to declare the problem leads to CWE-285. The product does not perform or incorrectly performs an authorization check when an actor attempts to access a resource or perform an action. Impacted is confidentiality, integrity, and availability. CVE summarizes:

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. Since usergroup table rows have no user_account_id and are loaded with a null owner, an unauthenticated guest whose session UserId is null gains full CRUD access to all usergroup objects.

The advisory is shared for download at github.com. This vulnerability is handled as CVE-2026-72575 since 08/10/2026. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. There are known technical details, but no exploit is available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 08/10/2026). The MITRE ATT&CK project declares the attack technique as T1548.002.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

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Productinfo

Name

• Daptin

Version

• 0.12.0
• 0.12.1
• 0.12.2
• 0.12.3
• 0.12.4
• 0.12.5
• 0.12.6
• 0.12.7
• 0.12.8
• 0.12.9
• 0.12.10
• 0.12.11
• 0.12.12
• 0.12.13
• 0.12.14
• 0.12.15
• 0.12.16
• 0.12.17
• 0.12.18
• 0.12.19
• 0.12.20
• 0.12.21
• 0.12.22
• 0.12.23
• 0.12.24
• 0.12.25
• 0.12.26
• 0.12.27
• 0.12.28
• 0.12.29
• 0.12.30
• 0.12.31
• 0.12.32
• 0.12.33
• 0.12.34

CPE 2.3info

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CPE 2.2info

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