CVE-2026-47856: medium-severity vulnerability in Spring Integration
JsonToObjectTransformer resolves the json__TypeId__ message header to an arbitrary class without an allow-list
Published · Updated
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13Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 6.3epss 0.3%
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
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
Affected products
Spring · Spring IntegrationRelated CVEs — Spring Integration
In the same product, most dangerous first.
CVE-2026-47864MEDIUMUnsafe Java deserialization in SerializingHttpMessageConverter — remote code executionEPSS 5.9%CVE-2019-3772—Spring Integration XML External Entity Injection (XXE)EPSS 3.0%CVE-2026-59274MEDIUMUnbounded decompression in UnZipTransformer enables zip-bomb DoSEPSS 0.4%CVE-2026-59307HIGHDeserialization allow-list silently bypassed: setBeanClassLoader replaces deserializer but mapper keeps stale referenceEPSS 0.4%CVE-2026-59311MEDIUMFixed predictable /tmp/ziptransformer work directory enables symlink pre-creationEPSS 0.4%CVE-2026-47861MEDIUMUDP adapter sends ack to attacker-supplied host:port parsed from packet body, even when acknowledge=falseEPSS 0.3%