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    CVE-2026-30837

    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.

    Published:Mar 10, 2026
    Last Modified:Apr 18, 2026
    EPS:Mar 10, 2026
    EPSS Score:0.00019
    CVSS Score:7.5

    Affected Products

    Vendor
    Elysiajs
    Product
    Elysia

    Exploits

    https://github.com/EdamAme-x/elysia-poc-redos

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-492 Regular Expression Exponential Blowup

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High