Vulnerability · Published Oct 11, 2026 · Assigned by VulnCheck
CVE-2026-108869JeecgBoot through 3.9.5 Missing Authorization via /sys/api/sendSysAnnouncement
Medium 4.3
In plain English
A medium-severity missing authorization in JeecgBoot from jeecgboot. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 11% of all known vulnerabilities).
Severity (CVSS 3.1)4.3Medium
Exploit odds (30 days)0.2%top 89.3% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known
Official description
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.
Affected products (as reported)
Weakness: CWE-862 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
References
- Researcher Proof of Concept exploit
- Vulnerable Code (v3.9.5) technical-description
- VulnCheck Advisory: JeecgBoot through 3.9.5 Missing Authorization via /sys/api/sendSysAnnouncement third-party-advisory