CVE-2026-108647 JeecgBoot through 3.9.5 Missing Authorization via /sys/checkRule/importExcel
Low-privileged users can bypass permission checks to bulk-create system-wide validation rules via an unprotected Excel import endpoint.
- 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-2026-108647?
CVE-2026-108647 is a medium-severity missing authorization vulnerability in JeecgBoot, published on 10 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 create validation rules through the SysCheckRuleController importExcel handler. Attackers can upload a crafted Excel workbook to bypass the system:checkRule:add permission and bulk-create system-wide encoding validation rules with arbitrary regular expression patterns.
Weakness: CWE-862
Which versions are affected by CVE-2026-108647?
How do I fix CVE-2026-108647?
No fix has been published for CVE-2026-108647 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-2026-108647 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-108647 exists.
Sources
Also known as GHSA-jqgc-vg5q-wcg4.