TI-2026-41172 Aliases CVE-2026-57234

Nokogiri: XML::Schema on JRuby allows network requests when NONET is set, bypassing CVE-2020-26247

LOW 13CWE-178Published 2026-06-25 · Updated 2026-06-25

Key facts

Attack vector: Network
Privileges required: Low
User interaction: Required
Attack complexity: High
Impact type: Information disclosure
Confidentiality · integrity · availability: Low · None · None
Fix status: Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-611 and the CVSS impact.

Summary

Nokogiri is an open source XML and HTML library for the Ruby programming language. Prior to 1.19.4, the NONET parse option, which Nokogiri turns on by default for Nokogiri::XML::Schema (see CVE-2020-26247), was not correctly enforced on the JRuby implementation. As a result, a schema parsed with default options could still cause external resources to be fetched over the network, potentially enabling SSRF or XXE attacks. This vulnerability is fixed in 1.19.4.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00198 9th percentileScored 2026-11-07

Fix Fixed nokogiri (sparklemotion): 1.19.4

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: No
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
sparklemotion	nokogiri	before 1.19.4	1.19.4	Patch available	CNA

nokogiri Vendorsparklemotion Affected before 1.19.4 Fixed in 1.19.4 Patch available CNA

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:nokogiri:nokogiri::::::ruby::*	before 1.19.4	Vulnerable	sparklemotion

cpe:2.3:a:nokogiri:nokogiri:*:*:*:*:*:ruby:*:* Versions before 1.19.4 Vulnerable ·sparklemotion

Remediation

Fix · CNA nokogiri (sparklemotion) Fixed in 1.19.4

Vendor assessments

Red Hat

Red Hat rating: Low. Red Hat's page for this CVE →

Not affected: 2 products

Red Hat 3scale API Management Platform 2
Red Hat Satellite 6

Timeline

2026-10-02 Threatist record created from CVE-2026-57234

References

Advisory 1

https://github.com/sparklemotion/nokogiri/security/advisories/GHSA-8678-w3jw-xfc2

TI-2022-11724 Improper Handling of Unexpected Data Type in Nokogiri CVSS 3.1HIGH 8.2
TI-2018-15259 zlib before 1.2.12 allows memory corruption when deflating (i.e., when compressing) if… CVSS 3.1HIGH 7.5
TI-2019-03885 OS command injection in Nokogiri CVSS 3.1CRITICAL 9.8
TI-2026-55247 Nokogiri before 1.19.3 ReDoS via CSS selector tokenizer CVSS 4.0HIGH 8.7
TI-2022-07536 Unchecked return value from xmlTextReaderExpand in Nokogiri CVSS 3.1HIGH 7.5
TI-2022-08648 Inefficient Regular Expression Complexity in Nokogiri CVSS 3.1HIGH 7.5

See all 20 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences