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    CVE-2024-10550

    A vulnerability in the `/3/ParseSetup` endpoint of h2oai/h2o-3 version 3.46.0.1 allows for a denial of service (DoS) attack. The endpoint applies a user-specified regular expression to a user-controllable string. This can be exploited by an attacker to cause inefficient regular expression complexity, leading to the exhaustion of server resources and making the server unresponsive.

    Published:Mar 20, 2025
    Last Modified:Jul 14, 2025
    EPS:Mar 20, 2025
    EPSS Score:0.00125
    CVSS Score:7.5

    Affected Products

    Vendor
    H2o
    Product
    H2o

    Exploits

    https://huntr.com/bounties/ef3f4d89-3b8b-4618-b134-cb93c1664ec6

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-492 Regular Expression Exponential Blowup

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    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