CVE-2026-126062

LOW 3.7

Nokogiri : Possible SSRF on JRuby when resolving external DTDs or entities with `NONET` set

CVSS Score

3.7

EPSS Score

0.0%

EPSS Percentile

0th

Nokogiri is an open source XML and HTML library for the Ruby programming language. Prior to 1.19.5, on JRuby, applications that parse untrusted XML with DTDLOAD, DTDVALID, or NOENT can have the NONET restriction bypassed when an external DTD or entity uses a short-form IPv4 host or uses absolute paths resolved against a network URL. The resolver can treat these identifiers as local and send a network request, potentially enabling server-side request forgery. CRuby and default parse options are not affected. This issue is fixed in version 1.19.5.

CWE	CWE-611 CWE-918
Vendor	sparklemotion
Product	nokogiri
Published	Nov 10, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N

Attack Vector

Network

Attack Complexity

High

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

None

Availability

None

Affected Versions

sparklemotion / nokogiri

< 1.19.5

References

NVD ↗ CVE.org ↗ EPSS Data ↗

github.com: https://github.com/sparklemotion/nokogiri/security/advisories/GHSA-v995-44v6-5fqm github.com: https://github.com/sparklemotion/nokogiri/pull/3752 github.com: https://github.com/sparklemotion/nokogiri/commit/97f41b65f4ee0cac859b87f0b26d2648c4806cb8 github.com: https://github.com/sparklemotion/nokogiri/commit/e448ca2827a9198644610fb730259e12baacdeac github.com: https://github.com/sparklemotion/nokogiri/releases/tag/v1.19.5