CVE-2026-47837: Missing Authentication for Critical Function vulnerability in Spring Spring Cloud Config allows Webhook reques

Routine

MEDIUM 6.8UPGRADE

CVE-2026-47837 is a medium-severity flaw (CVSS 6.8) affecting spring cloud config. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Missing Authentication for Critical Function vulnerability in Spring Spring Cloud Config allows Webhook requests to Spring Cloud Config Server's /monitor endpoint are not validated. This issue affects Spring Cloud Config: from 5.0.0 through 5.0.4, from 4.3.0 through 4.3.4, from 4.0.0 through 4.2.8, and through 3.1.14.

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	6.8 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	High
User interaction	None
EPSS exploit chance	0.6% (top 54%)
CISA exploited list	No
Weakness	CWE-306
Published	2026-08-26
Last modified	2026-09-04

Publisher (CNA): VMware · Vendor: vmware

Last updated 2026-09-04 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-08-26 18:16 UTCPublished CVE record published
2026-09-04 19:42 UTCUpdated Record last modified

vmware spring cloud config UPGRADE

Affected: < 3.1.15 · >= 4.0.0 and < 4.2.9 · >= 4.3.0 and < 4.3.5 · >= 5.0.0 and < 5.0.5

Fixed in: 3.1.15, 4.2.9, 4.3.5, 5.0.5

Safe to downgrade to: a release before 4.0.0

1. Check installed version

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

2. UPGRADE to 3.1.15 (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 4.0.0 (Debian / Ubuntu)

apt-cache madison spring-cloud-config sudo apt install spring-cloud-config=<VERSION_BEFORE_4.0.0> 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_4.0.0> 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.

Advisories and coverage

Official advisories

Spring Security Advisories: cve-2026-47837 - MEDIUM - Spring Cloud Config Server Monitor Endpoint Does Not Validate Webhook Requests 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-2026-47837?

spring cloud config: upgrade to 3.1.15, 4.2.9, 4.3.5, 5.0.5. Exact commands for each OS are on this page.

Is CVE-2026-47837 being exploited?

CVE-2026-47837 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-2026-47837 affect?

CVE-2026-47837 affects spring cloud config. Severity is medium (CVSS 6.8). Missing Authentication for Critical Function vulnerability in Spring Spring Cloud Config allows Webhook requests to Spring Cloud Config Server's /monitor endpoint are not validated. This issue affects Spring Cloud Config: from 5.0.0 throug

How urgent is CVE-2026-47837?

Priority 35/100. No elevated risk signals yet.

Software pages

VMware vulnerabilities

Related CVEs

CVE-2026-40982 CRITICAL 9.1 UPGRADE Spring Cloud Config allows applications to serve arbitrary text and binary files through the spring-cloud-conf
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
CVE-2026-47836 HIGH 7.2 UPGRADE The base directory (spring.cloud.config.server.svn.basedir) used by the Spring Cloud Config Server to clone SV

References

← Back to latest CVEs