CVE-2020-26247

LOW

Nokogiri < 1.11.0 - XML External Entity Injection via Schema Parsing

Title source: llm
STIX 2.1

Description

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.

References (8)

Core 8
Core References
Mailing List, Third Party Advisory mailing-list
https://lists.debian.org/debian-lts-announce/2021/06/msg00007.html
Third Party Advisory vendor-advisory
https://security.gentoo.org/glsa/202208-29
Mailing List, Third Party Advisory mailing-list
https://lists.debian.org/debian-lts-announce/2022/10/msg00018.html
Product, Third Party Advisory
https://rubygems.org/gems/nokogiri

Scores

CVSS v3 2.6
EPSS 0.0129
EPSS Percentile 66.5%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:L/I:N/A:N

Details

CWE
CWE-611
Status published
Products (5)
debian/debian_linux 9.0
debian/debian_linux 10.0
nokogiri/nokogiri 1.11.0 rc1 (3 CPE variants)
nokogiri/nokogiri < 1.11.0
rubygems/nokogiri 0 - 1.11.0RubyGems
Published Dec 30, 2020
Tracked Since Feb 18, 2026