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CVE-2026-108869

4.3 · MEDIUM

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.

Published Oct 11, 2026CWE-862EPSS 0.21%

Overview

CVE-2026-108869 is a medium-severity vulnerability. It was published on October 11, 2026 and has a CVSS 3.1 base score of 4.3 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 4.3, rated MEDIUM. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

Technical 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.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

GitHubgithub.com/AnkesKasty/cve-request-poc/blob/a7b6d1423555812d8efa26c91c5d0683164b31e5/JeecgBoot/poc_sys_api_send_sys_announcement.pyGitHubgithub.com/jeecgboot/JeecgBoot/blob/e3b9dc0aefe1943d9772b026f64ed671a7c82802/jeecg-boot/jeecg-module-system/jeecg-system-biz/src/main/java/org/jeecg/modules/api/controller/SystemApiController.java#L45-L48Refwww.vulncheck.com/advisories/jeecgboot-through-3.9.5-missing-authorization-via-sys-api-sendsysannouncement

How CyberStrike helps

Frequently asked questions

What is CVE-2026-108869?

CVE-2026-108869 is a medium-severity vulnerability. It was published on October 11, 2026 and has a CVSS 3.1 base score of 4.3 (MEDIUM).

How severe is CVE-2026-108869?

This vulnerability has a CVSS 3.1 base score of 4.3, rated MEDIUM. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2026-108869?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2026-108869?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-108869 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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