CVE-2026-108869 JeecgBoot through 3.9.5 Missing Authorization via /sys/api/sendSysAnnouncement
Low-privileged users can send forged system announcements to any user via multiple channels due to missing authorization checks.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-108869?
CVE-2026-108869 is a medium-severity missing authorization vulnerability in JeecgBoot, published on 11 Oct 2026. Any signed-in user can exploit it over the network, with no action from the victim.
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.
Weakness: CWE-862
Which versions are affected by CVE-2026-108869?
How do I fix CVE-2026-108869?
No fix has been published for CVE-2026-108869 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-108869 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-108869 exists.
Sources
Also known as GHSA-4qg9-8c9f-qcv4.