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    CVE-2026-59887

    linkify-it is a links recognition library with full Unicode support. Prior to 5.0.2, the mailto: schema validator used by .test() and .match() can be invoked at every mailto: occurrence and scan the remaining input through src_email_name in lib/re.mjs, causing O(n^2) CPU consumption on crafted user text. This issue is fixed in version 5.0.2.

    Published:Jul 8, 2026
    Last Modified:Aug 26, 2026
    EPS:Jul 8, 2026
    EPSS Score:0.00609
    CVSS Score:7.5

    Affected Products

    Vendor
    Markdown-it
    Product
    Linkify-it

    Exploits

    https://github.com/markdown-it/linkify-it/security/advisories/GHSA-v245-v573-v5vmhttps://github.com/markdown-it/linkify-it/security/advisories/GHSA-v245-v573-v5vm

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

    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