Spring Integration's JSON to object conversion uses the json__TypeId__ header to choose the deserialization target type, and resolves that header value to a class with ClassUtils.forName and no type/package allow-list. Spring Integration 7.1.0 Spring Integration 7.0.0 - 7.0.5 Spring Integration 6.5.0 - 6.5.10 Spring Integration 6.4.0 - 6.4.12 Spring Integration 5.5.21 and earlier
{
"cna_assigner": "vmware",
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/47xxx/CVE-2026-47856.json",
"unresolved_ranges": [
{
"extracted_events": [
{
"introduced": "7.1.0"
},
{
"last_affected": "7.1.0"
},
{
"introduced": "7.0.0"
},
{
"last_affected": "7.0.5"
},
{
"introduced": "6.5.0"
},
{
"last_affected": "6.5.10"
},
{
"introduced": "6.4.0"
},
{
"last_affected": "6.4.12"
},
{
"last_affected": "5.5.21"
}
],
"source": "AFFECTED_FIELD"
}
]
}