CVE-2026-40982: Spring Cloud Config allows applications to serve arbitrary text and binary files through the spring-cloud-conf

This month

CRITICAL 9.1REMOTEUPGRADE

CVE-2026-40982 is a critical-severity flaw (CVSS 9.1) affecting spring cloud config. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Spring Cloud Config allows applications to serve arbitrary text and binary files through the spring-cloud-config-server module. A malicious user, or attacker, can send a request using a specially crafted URL that can lead to a directory traversal attack. Spring Cloud Config 3.1.x: affected from 3.1.0 through 3.1.13 (inclusive); upgrade to 3.1.14 or greater (Enterprise Support Only). Spring Cloud Config 4.1.x: affected from 4.1.0 through 4.1.9 (in

Why this priority

Critical severity
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	9.1 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.7% (top 46%)
CISA exploited list	No
Weakness	CWE-22
Published	2026-05-07
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

2026-05-07 04:16 UTCPublished CVE record published
2026-10-26 19:10 UTCUpdated Record last modified

vmware spring cloud config UPGRADE

Affected: >= 3.1.0 and < 3.1.14 · >= 4.1.0 and < 4.1.10 · >= 4.2.0 and < 4.2.7 · >= 4.3.0 and < 4.3.3 · >= 5.0.0 and < 5.0.3

Fixed in: 3.1.14, 4.1.10, 4.2.7, 4.3.3, 5.0.3

Safe to downgrade to: a release before 3.1.0

1. Check installed version

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

2. UPGRADE to 3.1.14 (Debian / Ubuntu)

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

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade spring-cloud-config

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 3.1.0 (Debian / Ubuntu)

apt-cache madison spring-cloud-config sudo apt install spring-cloud-config=<VERSION_BEFORE_3.1.0> sudo apt-mark hold spring-cloud-config

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

dnf --showduplicates list spring-cloud-config sudo dnf downgrade spring-cloud-config-<VERSION_BEFORE_3.1.0> sudo dnf versionlock add spring-cloud-config

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-2026-40982?

spring cloud config: upgrade to 3.1.14, 4.1.10, 4.2.7, 4.3.3, 5.0.3. Exact commands for each OS are on this page.

Is CVE-2026-40982 being exploited?

CVE-2026-40982 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-2026-40982 affect?

CVE-2026-40982 affects spring cloud config. Severity is critical (CVSS 9.1). Spring Cloud Config allows applications to serve arbitrary text and binary files through the spring-cloud-config-server module. A malicious user, or attacker, can send a request using a specially crafted URL that can lead to a directory tra

How urgent is CVE-2026-40982?

Priority 50/100. Critical severity; Remotely exploitable, no login, no user action

Software pages

VMware vulnerabilities

Related CVEs

CVE-2026-40981 HIGH 7.5 UPGRADE When using Google Secrets Manager as a backend for the Spring Cloud Config server a client can craft a request
CVE-2026-41002 HIGH 7.2 UPGRADE The base directory (`spring.cloud.config.server.git.basedir`) used by the Spring Cloud Config Server to clone
CVE-2026-41004 MEDIUM 4.4 UPGRADE When enabling trace logging in Spring Cloud Config Server sensitive information was placed in plain text in th

References

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