CVE-2026-47864: SerializingHttpMessageConverter deserializes the body of incoming HTTP requests with a raw java.io.ObjectInput

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MEDIUM 6.4UPGRADE

CVE-2026-47864 is a medium-severity flaw (CVSS 6.4) affecting spring integration. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

SerializingHttpMessageConverter deserializes the body of incoming HTTP requests with a raw java.io.ObjectInputStream and no class filtering. Any request with Content-Type application/x-java-serialized-object whose body resolves to a Serializable type is read directly via readObject(). If an application using this converter on an inbound HTTP endpoint has any known Java deserialization "gadget" on its classpath, a remote, unauthenticated attacker

Why this priority

EPSS top 7%: very likely to be exploited

A fixed release or distro patch exists.

Risk facts

CVSS score	6.4 (Medium)
Attack vector	Network (remote)
Attack complexity	High
Privileges needed	Low
User interaction	None
EPSS exploit chance	5.9% (top 7%)
CISA exploited list	No
Weakness	CWE-502
Published	2026-08-27
Last modified	2026-09-02

Publisher (CNA): VMware · Vendor: vmware

Last updated 2026-09-02 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-08-27 06:17 UTCPublished CVE record published
2026-09-02 15:40 UTCUpdated Record last modified

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

Spring Security Advisories: cve-2026-47864 - MEDIUM - Unsafe Java deserialization in SerializingHttpMessageConverter — remote code execution 2026-08-20

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-2026-47864?

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-2026-47864 being exploited?

CVE-2026-47864 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-2026-47864 affect?

CVE-2026-47864 affects spring integration. Severity is medium (CVSS 6.4). SerializingHttpMessageConverter deserializes the body of incoming HTTP requests with a raw java.io.ObjectInputStream and no class filtering. Any request with Content-Type application/x-java-serialized-object whose body resolves to a Seriali

How urgent is CVE-2026-47864?

Priority 46/100. EPSS top 7%: very likely to be exploited

Software pages

Java vulnerabilities · VMware vulnerabilities

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References

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