CVE-2026-108638CWE-862broken-access-control

CVE-2026-108638

Medium · published October 11, 2026

CVSS v3.1
4.3
EPSS
0%
Percentile
14.0
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
4.3 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
CVSS v4.0
5.3 · CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N
EPSS
0.00238 · 14.0th percentile
Weakness
CWE-862 · Missing Authorization
Published
2026-10-11T02:16Z
References (3)
https://github.com/AnkesKasty/cve-request-poc/blob/a7b6d1423555812d8efa26c91c5d0683164b31e5/JeecgBoot/poc_user_group_member_removal.py · [email protected]https://github.com/jeecgboot/JeecgBoot/blob/e3b9dc0aefe1943d9772b026f64ed671a7c82802/jeecg-boot/jeecg-module-system/jeecg-system-biz/src/main/java/org/jeecg/modules/system/controller/SysUserController.java#L829-L844 · [email protected]https://www.vulncheck.com/advisories/jeecgboot-through-3.9.5-missing-authorization-via-sys-user-deletegroupuser · [email protected]
EPSS history
Timeline
  • 12 OCT 03:26Z
    EPSS moved — → 0%
    epss
  • 10 OCT 21:49Z
    JeecgBoot through 3.9.5 Missing Authorization via /sys/user/deleteGroupUser
    cvelistv5
  • 10 OCT 21:49Z
    JeecgBoot through 3.9.5 Missing Authorization via /sys/user/deleteGroupUser
    cvelistv5