JeecgBoot up to 3.9.2 SystemApiController improper authorization

Summaryinfo

A vulnerability was found in JeecgBoot up to 3.9.2. It has been classified as problematic. This affects an unknown part of the component SystemApiController. The manipulation leads to improper authorization. This vulnerability is referenced as CVE-2026-78970. Remote exploitation of the attack is possible. No exploit is available.

Detailsinfo

A vulnerability was found in JeecgBoot up to 3.9.2. It has been rated as problematic. This issue affects an unknown code block of the component SystemApiController. The manipulation 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. The summary by CVE is:

JeecgBoot 3.9.2 and earlier contains an authorization bypass vulnerability in the SystemApiController component. An authenticated attacker with any valid JWT token can access multiple API endpoints (including queryAllUser, queryUsersByUsernames, queryUserById, and queryUsersByIds) to retrieve sensitive information of all users, including real names, phone numbers, email addresses, employee numbers, and role definitions, due to missing fine-grained permission checks and incomplete data desensitization.

The advisory is shared at github.com. The identification of this vulnerability is CVE-2026-78970 since 08/25/2026. The exploitation is known to be easy. The attack may be initiated remotely. Neither technical details nor an exploit are publicly available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 09/04/2026). MITRE ATT&CK project uses the attack technique T1548.002 for this issue.

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

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Name

• JeecgBoot

Version

• 3.9.0
• 3.9.1
• 3.9.2

Website

• Product: https://github.com/jeecgboot/JeecgBoot/

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