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.
{
"cna_assigner": "VulnCheck",
"cwe_ids": [
"CWE-862"
],
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/108xxx/CVE-2026-108647.json"
}{
"extracted_events": [
{
"introduced": "0"
},
{
"last_affected": "3.9.5"
},
{
"fixed": "3.9.5"
}
],
"source": [
"AFFECTED_FIELD",
"DESCRIPTION"
]
}