CVE-2026-108617: JeecgBoot through 3.9.5 Missing Authorization via sysMessageTemplate/add Endpoint

Severity: medium (CVSS 4.3 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-10-10 · updated 2026-10-18
Weakness: CWE-862

Description

JeecgBoot through 3.9.5 contains a missing authorization vulnerability that allows low-privileged authenticated users to create message templates by calling POST /sys/message/sysMessageTemplate/add. Attackers holding only minimal roles can insert arbitrary notification templates with chosen codes and content into the shared sys_sms_template library used for system, e-mail, SMS and IM notifications.

Affected products

JeecgBoot: through 3.9.5

References

https://github.com/AnkesKasty/cve-request-poc/blob/a7b6d1423555812d8efa26c91c5d0683164b31e5/JeecgBoot/poc_c089_messagetemplate_add.py
https://github.com/jeecgboot/JeecgBoot/blob/e3b9dc0aefe1943d9772b026f64ed671a7c82802/jeecg-boot/jeecg-module-system/jeecg-system-biz/src/main/java/org/jeecg/modules/message/controller/SysMessageTemplateController.java#L82-L86
https://www.vulncheck.com/advisories/jeecgboot-through-3.9.5-missing-authorization-via-sysmessagetemplate-add-endpoint

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