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VulnerabilityPublished Updated

CVE-2026-42283: devspace · Missing Authentication

Affects devspaceSource CVE Database V5

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Not known to be exploited · CVSS 7.7 High : upgrade to 6.3.21 soon.

Data as of 30 Oct 2026, 06:59 UTC

CVSS 3.1 base score
7.7High
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.1% chance of exploitation in 30 days – higher than 4% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in 6.3.21
CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 14 May 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 29 Oct 2026.

What to do

Upgrade devspace and devspace-sh/devspace to 6.3.21.

Affected software

ProductAffectedFixed in
devspace-shdevspaceAffected
  • <6.3.21
Fixed in
  • 6.3.21
GitHubdevspace-sh/devspacepkg:github/devspace-sh/devspaceOther threatsAffected
  • <6.3.21
Fixed in
  • 6.3.21

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

Upgrade DevSpace to version 6.3.21 or later, where this vulnerability is fixed. Since the vendor has released a fixed version, applying this official update is the recommended remediation. No other mitigation steps are indicated by the vendor advisory.

Description

DevSpace versions prior to 6.3.21 have a vulnerability where the UI server WebSocket accepts connections from all origins by default. This allows a malicious website visited by a developer to establish a cross-origin WebSocket connection to ws://127.0.0.1:8090, exposing several endpoints without proper authentication. The issue is fixed in version 6.3.21.

References

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