CVE-2026-40990: OOM error is possible while attempting to add infinite amount of functions to Function Registry. Affected Spr

Routine

MEDIUM 5.7UPGRADE

CVE-2026-40990 is a medium-severity flaw (CVSS 5.7) affecting spring cloud function. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

OOM error is possible while attempting to add infinite amount of functions to Function Registry. Affected Spring Products and Versions: Spring Cloud Function 3.2.x: versions prior to 3.2.16 Spring Cloud Function 4.1.x: versions prior to 4.1.10 Spring Cloud Function 4.2.x: versions prior to 4.2.6 Spring Cloud Function 4.3.x: versions prior to 4.3.3 Spring Cloud Function 5.0.x: versions prior to 5.0.2 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	5.7 (Medium)
Attack vector	Physical
Attack complexity	Low
Privileges needed	Low
User interaction	Required
EPSS exploit chance	0.2% (top 89%)
CISA exploited list	No
Weakness	CWE-770
Published	2026-06-01
Last modified	2026-07-22

Publisher (CNA): VMware · Vendor: vmware

Last updated 2026-07-22 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-06-01 19:16 UTCPublished CVE record published
2026-07-22 07:10 UTCUpdated Record last modified

vmware spring cloud function UPGRADE

Affected: >= 3.2.0 and < 3.2.16 · >= 4.1.0 and < 4.1.10 · >= 4.2.0 and < 4.2.6 · >= 4.3.0 and < 4.3.3 · >= 5.0.0 and < 5.0.2

Fixed in: 3.2.16, 4.1.10, 4.2.6, 4.3.3, 5.0.2

Safe to downgrade to: a release before 3.2.0

1. Check installed version

apt-cache policy spring-cloud-function || rpm -q spring-cloud-function || spring-cloud-function --version

2. UPGRADE to 3.2.16 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade spring-cloud-function

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade spring-cloud-function

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 3.2.0 (Debian / Ubuntu)

apt-cache madison spring-cloud-function sudo apt install spring-cloud-function=<VERSION_BEFORE_3.2.0> sudo apt-mark hold spring-cloud-function

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

dnf --showduplicates list spring-cloud-function sudo dnf downgrade spring-cloud-function-<VERSION_BEFORE_3.2.0> sudo dnf versionlock add spring-cloud-function

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-2026-40990?

spring cloud function: upgrade to 3.2.16, 4.1.10, 4.2.6, 4.3.3, 5.0.2. Exact commands for each OS are on this page.

Is CVE-2026-40990 being exploited?

CVE-2026-40990 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-2026-40990 affect?

CVE-2026-40990 affects spring cloud function. Severity is medium (CVSS 5.7). OOM error is possible while attempting to add infinite amount of functions to Function Registry. Affected Spring Products and Versions: Spring Cloud Function 3.2.x: versions prior to 3.2.16 Spring Cloud Function 4.1.x: versions prior to 4.

How urgent is CVE-2026-40990?

Priority 23/100. No elevated risk signals yet.

Software pages

VMware vulnerabilities

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References

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