TI-2026-41375 Aliases CVE-2026-57438

Nokogiri: Possible Use-After-Free in XInclude Processing

LOW 10CWE-416Published 2026-06-25 · Updated 2026-06-25

Key facts

Attack vector: Local
Privileges required: None
User interaction: None
Attack complexity: High
Attack requirements: None
Impact type: —
Confidentiality · integrity · availability: Low · Low · High
Fix status: Partial Red Hat: 2 without a fix

Attack profile from CVSS 4.0 · CNA. Fix status from CNA and Red Hat.

Summary

Nokogiri is an open source XML and HTML library for the Ruby programming language. Prior to 1.19.4, XInclude substitution performed by Nokogiri::XML::Node#do_xinclude replaced each <xi:include> in place, freeing the include node along with its children (such as <xi:fallback> and its descendants) and any namespaces declared on them. If an application had already exposed one of those nodes or namespaces to Ruby, the corresponding Ruby object was left pointing at freed memory. Using the object could result in invalid reads or writes to memory. This vulnerability is fixed in 1.19.4.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00125 2nd percentileScored 2026-11-07

Fix Partial nokogiri (sparklemotion): 1.19.4Red Hat: 2 without a fix

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: Moderate. Red Hat's page for this CVE →

Product	Status	Plan or fix
Red Hat 3scale API Management Platform 2	Affected	No fix yet: Fix deferred
Red Hat Satellite 6	Affected	No fix yet: Fix deferred

Timeline

2026-10-02 Threatist record created from CVE-2026-57438

References

Advisory 1

https://github.com/sparklemotion/nokogiri/security/advisories/GHSA-wfpw-mmfh-qq69

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