CVE-2026-22740: A WebFlux server application that processes multipart requests creates temp files for parts larger than 10 K

Routine

MEDIUM 6.5UPGRADE

CVE-2026-22740 is a medium-severity flaw (CVSS 6.5) affecting spring framework. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A WebFlux server application that processes multipart requests creates temp files for parts larger than 10 K. Under some circumstances, temp files may remain not deleted after the request is fully processed. This allows an attacker to consume available disk space. Older, unsupported versions are also affected.

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	6.5 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.3% (top 72%)
CISA exploited list	No
Weakness	CWE-400
Published	2026-04-29
Last modified	2026-10-26

Publisher (CNA): VMware · Vendor: vmware

Last updated 2026-10-26 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-04-29 12:16 UTCPublished CVE record published
2026-10-26 20:10 UTCUpdated Record last modified

vmware spring framework UPGRADE

Affected: < 5.3.48 · >= 6.1.0 and < 6.1.27 · >= 6.2.0 and < 6.2.18 · >= 7.0.0 and < 7.0.7

Fixed in: 5.3.48, 6.1.27, 6.2.18, 7.0.7

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 5.3.48 (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.

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-2026-22740?

spring framework: upgrade to 5.3.48, 6.1.27, 6.2.18, 7.0.7. Exact commands for each OS are on this page.

Is CVE-2026-22740 being exploited?

CVE-2026-22740 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-2026-22740 affect?

CVE-2026-22740 affects spring framework. Severity is medium (CVSS 6.5). A WebFlux server application that processes multipart requests creates temp files for parts larger than 10 K. Under some circumstances, temp files may remain not deleted after the request is fully processed. This allows an attacker to consu

How urgent is CVE-2026-22740?

Priority 30/100. No elevated risk signals yet.

Software pages

Spring Framework vulnerabilities · VMware vulnerabilities

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References

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