XML External Entity (XXE) Injection Affecting ruby-nokogiri package, versions <1.11.1+dfsg-1


Severity

Recommended
low

Based on Debian security rating.

Threat Intelligence

EPSS
0.19% (57th percentile)

Do your applications use this vulnerable package?

In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.

Test your applications

Snyk Learn

Learn about XML External Entity (XXE) Injection vulnerabilities in an interactive lesson.

Start learning
  • Snyk IDSNYK-DEBIAN12-RUBYNOKOGIRI-1558952
  • published31 Dec 2020
  • disclosed30 Dec 2020

Introduced: 30 Dec 2020

CVE-2020-26247  (opens in a new tab)
CWE-611  (opens in a new tab)

How to fix?

Upgrade Debian:12 ruby-nokogiri to version 1.11.1+dfsg-1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream ruby-nokogiri package and not the ruby-nokogiri package as distributed by Debian. See How to fix? for Debian:12 relevant fixed versions and status.

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.

CVSS Scores

version 3.1