CVE-2020-26247 XXE in Nokogiri

2020-12-3000:00:00

CWE-611

GitHub_M

www.cve.org

2.6 Low

CVSS3

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

LOW

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

LOW

Integrity Impact

NONE

Availability Impact

NONE

CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:L/I:N/A:N

5.8 Medium

AI Score

Confidence

High

0.002 Low

EPSS

Percentile

53.1%

JSON

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.

CNA Affected

[
  {
    "vendor": "sparklemotion",
    "product": "nokogiri",
    "versions": [
      {
        "version": "< 1.11.0.rc4",
        "status": "affected"
      }
    ]
  }
]