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    CVE-2020-26247

    Nokogiri is a Rubygem providing HTML, XML, SAX, and Reader parsers with XPath and CSS selector support. In Nokogiri before version 1.11.0.rc4 there is an XXE vulnerability. XML Schemas parsed by Nokogiri::XML::Schema are trusted by default, allowing external resources to be accessed over the network, potentially enabling XXE or SSRF attacks. This behavior is counter to the security policy followed by Nokogiri maintainers, which is to treat all input as untrusted by default whenever possible. This is fixed in Nokogiri version 1.11.0.rc4.

    Published:Dec 30, 2020
    Last Modified:Nov 21, 2024
    EPS:Dec 30, 2020
    EPSS Score:0.01328
    CVSS Score:2.6

    Affected Products

    Vendor
    Debian
    Product
    Debian Linux
    Vendor
    Nokogiri
    Product
    Nokogiri
    Vendor
    Redhat
    Product
    3scale Amp
    Vendor
    Redhat
    Product
    Satellite
    Vendor
    Redhat
    Product
    Satellite Capsule

    Exploits

    No exploit reference

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-221 Data Serialization External Entities Blowup

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    References

    https://github.com/sparklemotion/nokogiri/commit/9c87439d9afa14a365ff13e73adc809cb2c3d97b
    https://github.com/sparklemotion/nokogiri/releases/tag/v1.11.0.rc4
    https://github.com/sparklemotion/nokogiri/security/advisories/GHSA-vr8q-g5c7-m54m
    https://hackerone.com/reports/747489
    https://lists.debian.org/debian-lts-announce/2021/06/msg00007.html
    https://lists.debian.org/debian-lts-announce/2022/10/msg00018.html
    https://rubygems.org/gems/nokogiri
    https://security.gentoo.org/glsa/202208-29
    https://github.com/sparklemotion/nokogiri/commit/9c87439d9afa14a365ff13e73adc809cb2c3d97b
    https://github.com/sparklemotion/nokogiri/releases/tag/v1.11.0.rc4
    https://github.com/sparklemotion/nokogiri/security/advisories/GHSA-vr8q-g5c7-m54m
    https://hackerone.com/reports/747489
    https://lists.debian.org/debian-lts-announce/2021/06/msg00007.html
    https://lists.debian.org/debian-lts-announce/2022/10/msg00018.html
    https://rubygems.org/gems/nokogiri
    https://security.gentoo.org/glsa/202208-29

    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