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CVE-2026-47856: Spring Integration's JSON to object conversion uses the json__TypeId__ header to choose the deserialization ta

28
Routine
MEDIUM 6.3UPGRADE

CVE-2026-47856 is a medium-severity flaw (CVSS 6.3) affecting spring integration. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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

Why this priority

  • No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score6.3 (Medium)
Attack vectorNetwork (remote)
Attack complexityLow
Privileges neededLow
User interactionNone
EPSS exploit chance0.3% (top 76%)
CISA exploited listNo
WeaknessCWE-502
Published2026-08-27
Last modified2026-09-04
Publisher (CNA): VMware · Vendor: vmware

Share: LinkedIn · X · Reddit

Last updated 2026-09-04 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

vmware spring integration UPGRADE
Affected: < 5.5.22 · >= 6.4.0 and < 6.4.13 · >= 6.5.0 and < 6.5.11 · >= 7.0.0 and < 7.0.5.1 · >= 7.1.0 and < 7.1.0.1
Fixed in: 5.5.22, 6.4.13, 6.5.11, 7.0.5.1, 7.1.0.1
Safe to downgrade to: a release before 6.4.0
1. Check installed version
apt-cache policy spring-integration || rpm -q spring-integration || spring-integration --version
2. UPGRADE to 5.5.22 (Debian / Ubuntu)
sudo apt update && sudo apt install --only-upgrade spring-integration
2. UPGRADE (RHEL / Amazon Linux / Fedora)
sudo dnf upgrade spring-integration
Note
Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.
3. If no update is available yet, DOWNGRADE to a release before 6.4.0 (Debian / Ubuntu)
apt-cache madison spring-integration sudo apt install spring-integration=<VERSION_BEFORE_6.4.0> sudo apt-mark hold spring-integration
3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)
dnf --showduplicates list spring-integration sudo dnf downgrade spring-integration-<VERSION_BEFORE_6.4.0> sudo dnf versionlock add spring-integration
Downgrade risk
Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.
After downgrade
Restart the service, and keep the package held until a fixed release ships.

Advisories and coverage

Official advisories

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-47856?

spring integration: upgrade to 5.5.22, 6.4.13, 6.5.11, 7.0.5.1, 7.1.0.1. Exact commands for each OS are on this page.

Is CVE-2026-47856 being exploited?

CVE-2026-47856 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-47856 affect?

CVE-2026-47856 affects spring integration. Severity is medium (CVSS 6.3). 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.

How urgent is CVE-2026-47856?

Priority 28/100. No elevated risk signals yet.

Software pages

VMware vulnerabilities

Related CVEs

References

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