ReDoS Vulnerability in Elysia Framework by Elysia
CVE-2026-30837

7.5HIGH

Key Information:

Vendor

Elysiajs

Status
Elysia
Vendor
CVE Published:
10 March 2026

What is CVE-2026-30837?

The Elysia framework, a Typescript-based solution for request validation, type inference, and OpenAPI documentation, has a vulnerability in its t.String({ format: 'url' }) functionality. This vulnerability allows an attacker to exploit the framework by repeating a partial URL format, leading to significant slowdown of regex processing. The issue has been addressed in version 1.4.26, preventing potential Denial of Service conditions.

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Affected Version(s)

elysia < 1.4.26

References

https://github.com/elysiajs/elysia/security/advisories/GH...
x_refsource_CONFIRM
https://github.com/EdamAme-x/elysia-poc-redos
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CVSS V3.1

Score:
7.5
Severity:
HIGH
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

JSON
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