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Vulnerability DatabaseCVE-2026-30837

CVE-2026-30837: 
JavaScript vulnerability analysis and mitigation

Elysia is a Typescript framework for request validation, type inference, OpenAPI documentation and client-server communication. Prior to 1.4.26 , t.String({ format: 'url' }) is vulnerable to ReDoS. Repeating a partial url format (protocol and hostname) multiple times cause regex to slow down significantly. This vulnerability is fixed in 1.4.26.

Source: NVD

Related JavaScript vulnerabilities:

CVE ID

Severity

Score

Technologies

Component name

CISA KEV exploit

Has fix

Published date

CVE-2026-39884HIGH8.3
  • JavaScriptJavaScript
  • mcp-server-kubernetes
NoYesApr 15, 2026
GHSA-26wg-9xf2-q495HIGH8.1
  • JavaScriptJavaScript
  • novu/api
NoYesApr 14, 2026
CVE-2026-33806HIGH7.5
  • JavaScriptJavaScript
  • fastify
NoYesApr 15, 2026
GHSA-43fj-qp3h-hrh5MEDIUM6.9
  • JavaScriptJavaScript
  • @sync-in/server
NoYesApr 15, 2026
CVE-2026-40346MEDIUM6.4
  • JavaScriptJavaScript
  • @nocobase/plugin-workflow-request
NoYesApr 15, 2026

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