CVE-2026-42283: DevSpace is a client-only developer tool for cloud-native development with Kubernetes

Routine

HIGH 7.7WATCHLISTDOWNGRADE

CVE-2026-42283 is a high-severity flaw (CVSS 7.7) affecting devspace. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

DevSpace is a client-only developer tool for cloud-native development with Kubernetes. Prior to 6.3.21, DevSpace's UI server WebSocket accepts connections from all origins by default, and therefore several endpoints are exposed via this WebSocket. When a developer runs the DevSpace UI and at the same time uses a browser to access the internet, a malicious website they visit can use their browser to establish a cross-origin WebSocket connection to

Why this priority

High severity
On your watchlist

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	7.7 (High)
Attack vector	Local
Attack complexity	High
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.2% (top 96%)
CISA exploited list	No
Weakness	CWE-200, CWE-306
Published	2026-05-14
Last modified	2026-06-17

Publisher (CNA): GitHub, Inc. · Vendor: devspace

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-05-14 16:16 UTCPublished CVE record published
2026-06-17 10:47 UTCUpdated Record last modified

devspace devspace DOWNGRADE

Affected: 6.3.20

Fixed in: no fixed release known

Safe to downgrade to: a release before 6.3.20

1. Check installed version

apt-cache policy devspace || rpm -q devspace || devspace --version

2. No fixed release: DOWNGRADE to a release before 6.3.20 (Debian / Ubuntu)

apt-cache madison devspace sudo apt install devspace=<VERSION_BEFORE_6.3.20> sudo apt-mark hold devspace

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list devspace sudo dnf downgrade devspace-<VERSION_BEFORE_6.3.20> sudo dnf versionlock add devspace

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-2026-42283?

devspace: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2026-42283 being exploited?

CVE-2026-42283 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-2026-42283 affect?

CVE-2026-42283 affects devspace. Severity is high (CVSS 7.7). DevSpace is a client-only developer tool for cloud-native development with Kubernetes. Prior to 6.3.21, DevSpace's UI server WebSocket accepts connections from all origins by default, and therefore several endpoints are exposed via this Web

How urgent is CVE-2026-42283?

Priority 33/100. High severity; On your watchlist

Software pages

Kubernetes vulnerabilities

References

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