CVE-2026-47885: The PartEventHttpMessageReader in Spring WebFlux does not enforce the maxPartSize limit when maxInMemorySize i

Routine

HIGH 7.5REMOTEUPGRADE

CVE-2026-47885 is a high-severity flaw (CVSS 7.5) affecting spring framework. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The PartEventHttpMessageReader in Spring WebFlux does not enforce the maxPartSize limit when maxInMemorySize is set to -1. Spring Framework 7.0.0 - 7.0.8 Spring Framework 6.2.0 - 6.2.19 Spring Framework 6.1.0 - 6.1.28

Why this priority

High severity
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	7.5 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.4% (top 70%)
CISA exploited list	No
Weakness	CWE-770
Published	2026-08-27
Last modified	2026-09-10

Publisher (CNA): VMware · Vendor: vmware

Last updated 2026-09-10 · 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
2026-09-10 14:06 UTCUpdated Record last modified

vmware spring framework UPGRADE

Affected: >= 6.1.0 and < 6.1.29 · >= 6.2.0 and < 6.2.20 · >= 7.0.0 and < 7.0.8.1

Fixed in: 6.1.29, 6.2.20, 7.0.8.1

Safe to downgrade to: a release before 6.1.0

1. Check installed version

apt-cache policy spring-framework || rpm -q spring-framework || spring-framework --version

2. UPGRADE to 6.1.29 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade spring-framework

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade spring-framework

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 6.1.0 (Debian / Ubuntu)

apt-cache madison spring-framework sudo apt install spring-framework=<VERSION_BEFORE_6.1.0> sudo apt-mark hold spring-framework

3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list spring-framework sudo dnf downgrade spring-framework-<VERSION_BEFORE_6.1.0> sudo dnf versionlock add spring-framework

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-2026-47885 - MEDIUM - Spring Framework maxPartSize Ignored in PartEventHttpMessageReader 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-2026-47885?

spring framework: upgrade to 6.1.29, 6.2.20, 7.0.8.1. Exact commands for each OS are on this page.

Is CVE-2026-47885 being exploited?

CVE-2026-47885 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-2026-47885 affect?

CVE-2026-47885 affects spring framework. Severity is high (CVSS 7.5). The PartEventHttpMessageReader in Spring WebFlux does not enforce the maxPartSize limit when maxInMemorySize is set to -1. Spring Framework 7.0.0 - 7.0.8 Spring Framework 6.2.0 - 6.2.19 Spring Framework 6.1.0 - 6.1.28

How urgent is CVE-2026-47885?

Priority 39/100. High severity; Remotely exploitable, no login, no user action

Software pages

Spring Framework vulnerabilities · VMware vulnerabilities

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References

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