Vulnerability · Published Oct 10, 2026 · Assigned by VulnCheck

CVE-2026-108679JeecgBoot through 3.9.5 Missing Authorization via /sys/api/sendBusAnnouncement

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 9% of all known vulnerabilities).

Severity (CVSS 3.1)4.3Medium

Exploit odds (30 days)0.2%top 91.3% 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 in the sendBusAnnouncement handler of SystemApiController that allows any authenticated user to send announcements without the required permissions. Low-privileged attackers can POST crafted bodies to /sys/api/sendBusAnnouncement with forged sender, recipients, title and content to deliver spoofed admin or system messages for phishing.

Affected products (as reported)

Vendor	Product	Versions
jeecgboot	JeecgBoot	0 – through 3.9.5

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/sendBusAnnouncement third-party-advisory