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    CVE-2026-28348

    lxml_html_clean is a project for HTML cleaning functionalities copied from `lxml.html.clean`. Prior to version 0.4.4, the _has_sneaky_javascript() method strips backslashes before checking for dangerous CSS keywords. This causes CSS Unicode escape sequences to bypass the @import and expression() filters, allowing external CSS loading or XSS in older browsers. This issue has been patched in version 0.4.4.

    Published:Mar 5, 2026
    Last Modified:Apr 17, 2026
    EPS:Mar 5, 2026
    EPSS Score:0.00044
    CVSS Score:6.1

    Affected Products

    Vendor
    Fedora-python
    Product
    Lxml Html Clean
    Vendor
    Fedoralovespython
    Product
    Lxml Html Clean

    Exploits

    https://github.com/fedora-python/lxml_html_clean/security/advisories/GHSA-hw26-mmpg-fqfghttps://github.com/fedora-python/lxml_html_clean/security/advisories/GHSA-hw26-mmpg-fqfg

    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