Answer in brief
CVE-2026-126062 records a Low severity (CVSS 3.7) vulnerability in Nokogiri : Possible SSRF on JRuby when resolving external DTDs or entities with `NONET` set. The current sources do not mark it as known exploited. The current feed maps sparklemotion/nokogiri (generic), nokogiri (rubygems), nokogiri (rubygems). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 3.7. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps sparklemotion/nokogiri (generic), nokogiri (rubygems), nokogiri (rubygems). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| sparklemotion/nokogirigeneric | <1.19.5 | 1.19.5 |
| nokogirirubygems | <1.19.5 | 1.19.5 |
| nokogirirubygems | >=0 <1.19.5 | 1.19.5 |
Published upstream
Nov 10, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Nov 10, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Nov 10, 2026
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.
Quoted source text, attributed separately from HOL analysis.