CVE Feed

    Dashboard / CVE / CVE-2026-49476

    CVE-2026-49476

    Soup Sieve is a CSS selector library designed to be used with Beautiful Soup 4. Prior to 2.8.4, the CSS selector parser in soupsieve allocates unbounded memory when compiling large comma-separated selector lists, allowing an attacker who can supply a crafted selector string to soupsieve.compile() or Beautiful Soup .select() / .select_one() to allocate hundreds of megabytes of heap memory from a relatively small input and cause denial of service. This issue is fixed in version 2.8.4.

    Published:Jul 14, 2026
    Last Modified:Jul 27, 2026
    EPS:Jul 14, 2026
    EPSS Score:0.00426
    CVSS Score:7.5

    Affected Products

    Vendor
    Facelessuser
    Product
    Soupsieve

    Exploits

    https://github.com/facelessuser/soupsieve/security/advisories/GHSA-2wc2-fm75-p42xhttps://github.com/facelessuser/soupsieve/security/advisories/GHSA-2wc2-fm75-p42x

    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