CVE-2026-126062

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

publishedCWE-611CWE-918

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.

Technical severity3.7 lowCVSS 3.1 · CNA: GitHub_M

Published2026-11-10Source updated 2026-11-12

Collected2026-11-124 attributed sources

Fixes and workarounds

Fix

nokogiri (RubyGems): OSV reports a fixed version 1.19.5. Check the advisory for supported release branches.

Source: OSV GHSA-v995-44v6-5fqm

Affected products and versions

Affected products, source version ranges and reporting authorities
Product	Versions	Authority
nokogiri sparklemotion	< 1.19.5 (affected)	CNA: GitHub_M
nokogiri `nokogiri` RubyGems	1.0.0 (affected, RubyGems) 1.0.1 (affected, RubyGems) 1.0.2 (affected, RubyGems) 1.0.3 (affected, RubyGems) 1.0.4 (affected, RubyGems) 1.0.5 (affected, RubyGems) 1.0.6 (affected, RubyGems) 1.0.7 (affected, RubyGems) 1.1.0 (affected, RubyGems) 1.1.1 (affected, RubyGems) 1.10.0 (affected, RubyGems) 1.10.0.rc1 (affected, RubyGems) 1.10.1 (affected, RubyGems) 1.10.10 (affected, RubyGems) 1.10.2 (affected, RubyGems) 1.10.3 (affected, RubyGems) 1.10.4 (affected, RubyGems) 1.10.5 (affected, RubyGems) 1.10.6 (affected, RubyGems) 1.10.7 (affected, RubyGems) 1.10.8 (affected, RubyGems) 1.10.9 (affected, RubyGems) 1.11.0 (affected, RubyGems) 1.11.0.rc1 (affected, RubyGems) 1.11.0.rc2 (affected, RubyGems) 1.11.0.rc3 (affected, RubyGems) 1.11.0.rc4 (affected, RubyGems) 1.11.1 (affected, RubyGems) 1.11.2 (affected, RubyGems) 1.11.3 (affected, RubyGems) 1.11.4 (affected, RubyGems) 1.11.5 (affected, RubyGems) 1.11.6 (affected, RubyGems) 1.11.7 (affected, RubyGems) 1.12.0 (affected, RubyGems) 1.12.0.rc1 (affected, RubyGems) 1.12.1 (affected, RubyGems) 1.12.2 (affected, RubyGems) 1.12.3 (affected, RubyGems) 1.12.4 (affected, RubyGems) 1.12.5 (affected, RubyGems) 1.13.0 (affected, RubyGems) 1.13.1 (affected, RubyGems) 1.13.10 (affected, RubyGems) 1.13.2 (affected, RubyGems) 1.13.3 (affected, RubyGems) 1.13.4 (affected, RubyGems) 1.13.5 (affected, RubyGems) 1.13.6 (affected, RubyGems) 1.13.7 (affected, RubyGems) 1.13.8 (affected, RubyGems) 1.13.9 (affected, RubyGems) 1.14.0 (affected, RubyGems) 1.14.0.rc1 (affected, RubyGems) 1.14.1 (affected, RubyGems) 1.14.2 (affected, RubyGems) 1.14.3 (affected, RubyGems) 1.14.4 (affected, RubyGems) 1.14.5 (affected, RubyGems) 1.15.0 (affected, RubyGems) 1.15.1 (affected, RubyGems) 1.15.2 (affected, RubyGems) 1.15.3 (affected, RubyGems) 1.15.4 (affected, RubyGems) 1.15.5 (affected, RubyGems) 1.15.6 (affected, RubyGems) 1.15.7 (affected, RubyGems) 1.16.0 (affected, RubyGems) 1.16.0.rc1 (affected, RubyGems) 1.16.1 (affected, RubyGems) 1.16.2 (affected, RubyGems) 1.16.3 (affected, RubyGems) 1.16.4 (affected, RubyGems) 1.16.5 (affected, RubyGems) 1.16.6 (affected, RubyGems) 1.16.7 (affected, RubyGems) 1.16.8 (affected, RubyGems) 1.17.0 (affected, RubyGems) 1.17.1 (affected, RubyGems) 1.17.2 (affected, RubyGems) 1.18.0 (affected, RubyGems) 1.18.0.rc1 (affected, RubyGems) 1.18.1 (affected, RubyGems) 1.18.10 (affected, RubyGems) 1.18.2 (affected, RubyGems) 1.18.3 (affected, RubyGems) 1.18.4 (affected, RubyGems) 1.18.5 (affected, RubyGems) 1.18.6 (affected, RubyGems) 1.18.7 (affected, RubyGems) 1.18.8 (affected, RubyGems) 1.18.9 (affected, RubyGems) 1.19.0 (affected, RubyGems) 1.19.1 (affected, RubyGems) 1.19.2 (affected, RubyGems) 1.19.3 (affected, RubyGems) 1.19.4 (affected, RubyGems) 1.2.0 (affected, RubyGems) 1.2.1 (affected, RubyGems) 1.2.2 (affected, RubyGems) 1.2.3 (affected, RubyGems) 1.3.0 (affected, RubyGems) 1.3.1 (affected, RubyGems) 1.3.2 (affected, RubyGems) 1.3.3 (affected, RubyGems) 1.4.0 (affected, RubyGems) 1.4.1 (affected, RubyGems) 1.4.2 (affected, RubyGems) 1.4.2.1 (affected, RubyGems) 1.4.3 (affected, RubyGems) 1.4.3.1 (affected, RubyGems) 1.4.4 (affected, RubyGems) 1.4.4.1 (affected, RubyGems) 1.4.4.2 (affected, RubyGems) 1.4.5 (affected, RubyGems) 1.4.6 (affected, RubyGems) 1.4.7 (affected, RubyGems) 1.5.0 (affected, RubyGems) 1.5.0.beta.1 (affected, RubyGems) 1.5.0.beta.2 (affected, RubyGems) 1.5.0.beta.3 (affected, RubyGems) 1.5.0.beta.4 (affected, RubyGems) 1.5.1 (affected, RubyGems) 1.5.1.rc1 (affected, RubyGems) 1.5.10 (affected, RubyGems) 1.5.11 (affected, RubyGems) 1.5.2 (affected, RubyGems) 1.5.3 (affected, RubyGems) 1.5.3.rc2 (affected, RubyGems) 1.5.3.rc3 (affected, RubyGems) 1.5.3.rc4 (affected, RubyGems) 1.5.3.rc5 (affected, RubyGems) 1.5.3.rc6 (affected, RubyGems) 1.5.4 (affected, RubyGems) 1.5.4.rc1 (affected, RubyGems) 1.5.4.rc2 (affected, RubyGems) 1.5.4.rc3 (affected, RubyGems) 1.5.5 (affected, RubyGems) 1.5.5.rc1 (affected, RubyGems) 1.5.5.rc2 (affected, RubyGems) 1.5.5.rc3 (affected, RubyGems) 1.5.6 (affected, RubyGems) 1.5.6.rc1 (affected, RubyGems) 1.5.6.rc2 (affected, RubyGems) 1.5.6.rc3 (affected, RubyGems) 1.5.7 (affected, RubyGems) 1.5.7.rc1 (affected, RubyGems) 1.5.7.rc2 (affected, RubyGems) 1.5.7.rc3 (affected, RubyGems) 1.5.8 (affected, RubyGems) 1.5.9 (affected, RubyGems) 1.6.0 (affected, RubyGems) 1.6.0.rc1 (affected, RubyGems) 1.6.1 (affected, RubyGems) 1.6.2 (affected, RubyGems) 1.6.2.1 (affected, RubyGems) 1.6.2.rc1 (affected, RubyGems) 1.6.2.rc2 (affected, RubyGems) 1.6.2.rc3 (affected, RubyGems) 1.6.3 (affected, RubyGems) 1.6.3.1 (affected, RubyGems) 1.6.3.rc1 (affected, RubyGems) 1.6.3.rc2 (affected, RubyGems) 1.6.3.rc3 (affected, RubyGems) 1.6.4 (affected, RubyGems) 1.6.4.1 (affected, RubyGems) 1.6.5 (affected, RubyGems) 1.6.6.1 (affected, RubyGems) 1.6.6.2 (affected, RubyGems) 1.6.6.3 (affected, RubyGems) 1.6.6.4 (affected, RubyGems) 1.6.7 (affected, RubyGems) 1.6.7.1 (affected, RubyGems) 1.6.7.2 (affected, RubyGems) 1.6.7.rc2 (affected, RubyGems) 1.6.7.rc3 (affected, RubyGems) 1.6.7.rc4 (affected, RubyGems) 1.6.8 (affected, RubyGems) 1.6.8.1 (affected, RubyGems) 1.6.8.rc1 (affected, RubyGems) 1.6.8.rc2 (affected, RubyGems) 1.6.8.rc3 (affected, RubyGems) 1.7.0 (affected, RubyGems) 1.7.0.1 (affected, RubyGems) 1.7.1 (affected, RubyGems) 1.7.2 (affected, RubyGems) 1.8.0 (affected, RubyGems) 1.8.1 (affected, RubyGems) 1.8.2 (affected, RubyGems) 1.8.3 (affected, RubyGems) 1.8.4 (affected, RubyGems) 1.8.5 (affected, RubyGems) 1.9.0 (affected, RubyGems) 1.9.0.rc1 (affected, RubyGems) 1.9.1 (affected, RubyGems) Ecosystem version events: introduced 0; fixed 1.19.5 Source events (ECOSYSTEM) `[ { "introduced": "0" }, { "fixed": "1.19.5" } ]` Other versions: unaffected	OSV GHSA-v995-44v6-5fqm

Version ranges are source assertions. Check the vendor advisory and your installed configuration before determining exposure.

CVSS assessments

CVSS scores, vectors and reporting authorities
Version / score	Vector	Authority
3.1 / 3.7 low	`CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N`	CNA: GitHub_M
3.1 / 3.7 low	`CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N`	NVD: [email protected]

Exploit evidence

No exploit evidence in collected sources. This is not proof of no exploitation.

References

https://github.com/sparklemotion/nokogiri/security/advisories/GHSA-v995-44v6-5fqmCNA: GitHub_M · x_refsource_CONFIRM
https://github.com/sparklemotion/nokogiri/pull/3752CNA: GitHub_M · x_refsource_MISC
https://github.com/sparklemotion/nokogiri/commit/97f41b65f4ee0cac859b87f0b26d2648c4806cb8CNA: GitHub_M · x_refsource_MISC
https://github.com/sparklemotion/nokogiri/commit/e448ca2827a9198644610fb730259e12baacdeacCNA: GitHub_M · x_refsource_MISC
https://github.com/sparklemotion/nokogiri/releases/tag/v1.19.5CNA: GitHub_M · x_refsource_MISC
https://github.com/sparklemotion/nokogiri/commit/97f41b65f4ee0cac859b87f0b26d2648c4806cb8[email protected]
https://github.com/sparklemotion/nokogiri/commit/e448ca2827a9198644610fb730259e12baacdeac[email protected]
https://github.com/sparklemotion/nokogiri/pull/3752[email protected]
https://github.com/sparklemotion/nokogiri/releases/tag/v1.19.5[email protected]
https://github.com/sparklemotion/nokogiri/security/advisories/GHSA-v995-44v6-5fqm[email protected]
https://github.com/advisories/GHSA-v995-44v6-5fqmOSV / GitHub Security Advisories · advisory
https://osv.dev/vulnerability/GHSA-v995-44v6-5fqmOSV / GitHub Security Advisories · osv

Prioritization

CISA known exploited vulnerabilities

No KEV listing in collected sources. This does not establish that exploitation is absent.

EPSS

0.38% estimated probability of exploitation in the next 30 days; percentile 32.49.
Assessed 2026-11-12 by FIRST.

SSVC

Exploitation: none
Automatable: no
Technical impact: partial

ADP: CISA-ADP · 2026-11-12

Provenance

CNA: GitHub_M
Source updated 2026-11-12
Retrieved 2026-11-12

NVD
Source updated 2026-11-10
Retrieved 2026-11-11

OSV / GitHub Security Advisories
Source updated 2026-11-10
Retrieved 2026-11-10

FIRST EPSS
Source updated Not reported
Retrieved 2026-11-12

Disclosure revision
3e005cc94628676e3e8ca3d3a4a287a7418cff1bb78da2a1b8b8103951e441f6

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