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CVE-2026-57234

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

Published: Jun 25, 2026Updated: Jun 26, 2026 Sources: CVE List NVDCWE-178
2.6LOW
NVD MITRE
EPSS Score
0.2%
Top 93.8%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available
Self-Check
Not available

Description

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.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:NAC:HPR:LUI:RS:UC:LI:NA:N
Exploitability
AV:NAttack Vector
Network
AC:HAttack Complexity
High
PR:LPrivileges Required
Low
UI:RUser Interaction
Required
Scope
S:UScope
Unchanged
Impact
C:LConfidentiality
Low
I:NIntegrity
None
A:NAvailability
None
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Weaknesses

CWE-178CWE-184CWE-611

Affected Products

sparklemotion
oss-project
nokogiriLibrary
OSS Libraries / generic-library
nokogiri
oss-project
nokogiriLibrary
OSS Libraries / generic-library

Exploitability

Official Patch Available

Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

2 techniques
Collection
Initial Access
View detailed technique mapping

References

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

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