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CVE-2026-108638— JeecgBoot through 3.9.5 Missing Authorization via /sys/user/deleteGroupUser

Quick assessment

Affected
jeecgboot JeecgBoot
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.

JeecgBoot 在 3.9.5 及之前版本中存在一个缺失授权检查的安全漏洞。该漏洞允许低权限的已认证用户通过 SysUserController 中的 deleteGroupUser 处理程序，移除用户与用户组的关联关系。攻击者可以发送带有任意 groupId 和 userId 参数的 DELETE 请求，从而将任何用户从管理员维护的用户组中移除，且系统未进行所有权或租户隔离检查。

CVSS 4.3 · Medium

Possible ATT&CK Techniques 1 AI

T1078 · Valid Accounts
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I. Basic Information for CVE-2026-108638

Vulnerability Information
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Vulnerability Title
JeecgBoot through 3.9.5 Missing Authorization via /sys/user/deleteGroupUser
Source: CVE Program / CVE List V5
Vulnerability Description
JeecgBoot through 3.9.5 contains a missing authorization vulnerability that allows low-privileged authenticated users to remove group memberships via the deleteGroupUser handler in SysUserController. Attackers can send DELETE requests with arbitrary groupId and userId values to remove any user from any administrator-maintained user group without ownership or tenant checks.
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:N
Source: CVE Program / CVE List V5
Vulnerability Type
授权机制缺失
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
jeecgboot JeecgBoot 0 ~ 3.9.5 -

II. Public POCs for CVE-2026-108638

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III. Intelligence Information for CVE-2026-108638

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Other References for CVE-2026-108638 (3)

Same Patch Batch · jeecgboot · 2026-10-10 · 76 CVEs total

CVE-2026-108628 8.1 HIGH JeecgBoot through 3.9.5 Missing Authorization via saveDeptRolePermission Endpoint
CVE-2026-108657 8.1 HIGH JeecgBoot through 3.9.5 Missing Authorization via /sys/tenant/passApply
CVE-2026-108623 7.1 HIGH JeecgBoot through 3.9.5 Missing Authorization via /sys/log/deleteBatch
CVE-2026-108671 6.5 MEDIUM JeecgBoot through 3.9.5 Missing Authorization via /airag/airagMcp/queryById
CVE-2026-108677 6.5 MEDIUM JeecgBoot through 3.9.5 Missing Authorization via /sys/api/getUserByName
CVE-2026-108661 6.5 MEDIUM JeecgBoot through 3.9.5 Missing Authorization via /sys/tenant/changeOwenUserTenant
CVE-2026-108648 6.5 MEDIUM JeecgBoot through 3.9.5 Missing Authorization via getDynamicDbSourceByCode Endpoint
CVE-2026-108622 5.4 MEDIUM JeecgBoot through 3.9.5 Missing Authorization via /sys/log/delete Endpoint
CVE-2026-108639 5.4 MEDIUM JeecgBoot through 3.9.5 Missing Authorization via /sys/dict/deletePhysic/{id}
CVE-2026-108634 5.4 MEDIUM JeecgBoot through 3.9.5 Missing Authorization via sysDepartPermission deleteBatch Endpoint
CVE-2026-108615 5.4 MEDIUM JeecgBoot through 3.9.5 Missing Authorization via /airag/extData/delete
CVE-2026-108668 5.4 MEDIUM JeecgBoot through 3.9.5 Missing Authorization via /airag/prompts/deleteRecycleBin
CVE-2026-108611 5.4 MEDIUM JeecgBoot through 3.9.5 Missing Authorization via /airag/word/delete Endpoint
CVE-2026-108643 5.4 MEDIUM JeecgBoot through 3.9.5 Missing Authorization via /sys/category/deleteBatch
CVE-2026-108666 5.4 MEDIUM JeecgBoot through 3.9.5 Missing Authorization via /airag/prompts/deleteBatch
CVE-2026-108613 5.4 MEDIUM JeecgBoot through 3.9.5 Missing Authorization via /airag/app/release Endpoint
CVE-2026-108619 5.4 MEDIUM JeecgBoot through 3.9.5 Missing Authorization via sysMessageTemplate deleteBatch Endpoint
CVE-2026-108606 5.4 MEDIUM JeecgBoot through 3.9.5 Missing Authorization via /airag/ocr/deleteById
CVE-2026-108644 5.4 MEDIUM JeecgBoot through 3.9.5 Missing Authorization via /sys/category/delete
CVE-2026-108624 5.4 MEDIUM JeecgBoot through 3.9.5 Missing Authorization via sysMessage deleteBatch Endpoint

Showing top 20 of 76 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

Same product: JeecgBoot
Same vendor: jeecgboot
Same weakness: CWE-862

V. Comments for CVE-2026-108638

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