---
id: CVE-2026-108652
title: >-
  JeecgBoot through 3.9.5 contains a missing authorization vulnerability in the
  SystemApiController updateAvatar handler that allows any authenticated user to
  change other users' avatars
summary: >-
  JeecgBoot through 3.9.5 contains a missing authorization vulnerability in the
  SystemApiController updateAvatar handler that allows any authenticated user to
  change other users' avatars. Low-privileged attackers can send PUT requests
  with…
severity: medium
cvss: 4.3
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N'
cwe:
  - CWE-862
published: '2026-10-10'
updated: '2026-10-10'
sourceUpdated: '2026-10-10T22:16:41.203'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-108652'
references:
  - url: >-
      https://github.com/AnkesKasty/cve-request-poc/blob/a7b6d1423555812d8efa26c91c5d0683164b31e5/JeecgBoot/poc_sys_api_update_avatar.py
    label: disclosure@vulncheck.com
  - url: >-
      https://github.com/jeecgboot/JeecgBoot/blob/e3b9dc0aefe1943d9772b026f64ed671a7c82802/jeecg-boot/jeecg-module-system/jeecg-system-biz/src/main/java/org/jeecg/modules/api/controller/SystemApiController.java#L830-L833
    label: disclosure@vulncheck.com
  - url: >-
      https://www.vulncheck.com/advisories/jeecgboot-through-3.9.5-missing-authorization-via-sys-api-updateavatar
    label: disclosure@vulncheck.com
tags:
  - nvd
ingestedAt: '2026-10-10T22:34:13.265Z'
---

## Overview

JeecgBoot through 3.9.5 contains a missing authorization vulnerability in the SystemApiController updateAvatar handler that allows any authenticated user to change other users' avatars. Low-privileged attackers can send PUT requests with a target user id and an arbitrary value, such as an attacker-controlled image URL, to replace administrators' avatars.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.