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    CVE-2016-9909

    The serializer in html5lib before 0.99999999 might allow remote attackers to conduct cross-site scripting (XSS) attacks by leveraging mishandling of the < (less than) character in attribute values.

    Published:Feb 22, 2017
    Last Modified:Apr 20, 2025
    EPS:Feb 22, 2017
    EPSS Score:0.00494
    CVSS Score:6.1

    Affected Products

    Vendor
    Html5lib
    Product
    Html5lib

    Exploits

    No exploit reference

    References

    http://www.openwall.com/lists/oss-security/2016/12/06/5
    http://www.openwall.com/lists/oss-security/2016/12/08/8
    http://www.securityfocus.com/bid/95132
    https://github.com/html5lib/html5lib-python/commit/9b8d8eb5afbc066b7fac9390f5ec75e5e8a7cab7
    https://github.com/html5lib/html5lib-python/issues/11
    https://github.com/html5lib/html5lib-python/issues/12
    https://html5lib.readthedocs.io/en/latest/changes.html#b9
    http://www.openwall.com/lists/oss-security/2016/12/06/5
    http://www.openwall.com/lists/oss-security/2016/12/08/8
    http://www.securityfocus.com/bid/95132
    https://github.com/html5lib/html5lib-python/commit/9b8d8eb5afbc066b7fac9390f5ec75e5e8a7cab7
    https://github.com/html5lib/html5lib-python/issues/11
    https://github.com/html5lib/html5lib-python/issues/12
    https://html5lib.readthedocs.io/en/latest/changes.html#b9

    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