JeecgBoot through 3.9.5 Missing Authorization via /sys/api/sendSysAnnouncement

{
  "id": "bf5c65f91b185b849f0839ba2a902616a5b921ff8fd9eed601f0941eef66dd5a",
  "url": "https://osv.dev/vulnerability/CVE-2026-108869",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "JeecgBoot through 3.9.5 Missing Authorization via /sys/api/sendSysAnnouncement",
    "summary": "JeecgBoot through 3.9.5 contains a missing authorization vulnerability that allows low-privileged authenticated users to send system announcements by calling POST /sys/api/sendSysAnnouncement. Attackers can supply arbitrary title, content, fromUser and toUser values to deliver forged announcements to any users via WebSocket, WeCom, DingTalk and Feishu.",
    "evidence": "osv:CVE-2026-108869",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2026-108869",
      "aliases": [
        "CVE-2026-108869"
      ],
      "metrics": [
        {
          "type": "CVSS_V4",
          "score": "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"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/jeecgboot/jeecgboot",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "last_affected": "e3b9dc0aefe1943d9772b026f64ed671a7c82802"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "last_affected": "3.9.5"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StandardRange"
                  },
                  {
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "last_affected": "3.9.5"
                      }
                    ],
                    "source": "DESCRIPTION"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v3.9.5",
            "v3.9.2",
            "v3.9.1last",
            "v3.9.1",
            "v3.9.0last",
            "v3.9.0",
            "v3.8.3.1",
            "v3.8.3",
            "v3.8.2last_springboot3",
            "v3.8.0last_springboot3",
            "v3.7.3springboot3",
            "v3.7.1springboot3",
            "v3.7.0_springboot3",
            "v3.6.2_springboot3",
            "v3.6.0",
            "v3.5.5last",
            "v3.5.5",
            "v3.5.3",
            "v3.5.1last",
            "v3.5.1",
            "v3.5.0",
            "v3.4.4last",
            "v3.4.4",
            "v3.4.3last",
            "v3.4.3",
            "v3.4.2",
            "v3.4.0",
            "v3.2.0",
            "v3.1.0",
            "v3.0.0",
            "v3.0",
            "v2.4.6",
            "v2.4.5",
            "2.4.5",
            "v2.4.3",
            "v2.4.2",
            "v2.4.1",
            "2.4.1",
            "2.4.0",
            "v2.3.0",
            "2.3.0",
            "v2.3",
            "v2.2.1",
            "2.2.0",
            "v2.1.4",
            "v2.1.3",
            "v2.1.1",
            "v2.1.0",
            "v2.0.2"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-108869.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:22.810188476Z",
      "provider": "osv",
      "references": [
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/108xxx/CVE-2026-108869.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-108869",
        "https://www.vulncheck.com/advisories/jeecgboot-through-3.9.5-missing-authorization-via-sys-api-sendsysannouncement",
        "https://github.com/jeecgboot/JeecgBoot",
        "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#L45-L48",
        "https://github.com/AnkesKasty/cve-request-poc/blob/a7b6d1423555812d8efa26c91c5d0683164b31e5/JeecgBoot/poc_sys_api_send_sys_announcement.py"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-862"
        ],
        "cna_assigner": "VulnCheck",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/108xxx/CVE-2026-108869.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-108869",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 489271,
  "published_at": "2026-10-11T14:33:33.998+00:00"
}