cve-2026-57234

LOW CVSS 2.6 nvd
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.

Timeline
Published
2026-06-25
Last Modified
2026-10-25
CVSS Details
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
LOW
Affected Products
  • nokogiri nokogiri
Weaknesses (CWE)
CVSS metrics
Version Base Severity Vector Exploitability Impact Source
3.1 2.6 LOW CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:L/I:N/A:N 1.2 1.4 security-advisories@github.com
CPE configurations
OR
CPE Version range Vulnerable
cpe:2.3:a:nokogiri:nokogiri:*:*:*:*:*:ruby:*:* < 1.19.4 yes
NVD metadata
NVD status
Analyzed
Source identifier
security-advisories@github.com
References
Linked Vulnerabilities

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  "datePublished": "2026-06-25T15:16:40.343",
  "dateUpdated": "2026-10-25T23:10:00.167",
  "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.",
  "id": "CVE-2026-57234",
  "raw": {
    "affected": [
      {
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        "value": "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."
      },
      {
        "lang": "es",
        "value": "Nokogiri es una biblioteca de código abierto de XML y HTML para el lenguaje de programación Ruby. Antes de la versión 1.19.4, la opción de análisis NONET, que Nokogiri activa por defecto para Nokogiri::XML::Schema (ver CVE-2020-26247), no se aplicaba correctamente en la implementación de JRuby. Como resultado, un esquema analizado con las opciones por defecto aún podía provocar que se obtuvieran recursos externos a través de la red, lo que potencialmente permitía ataques SSRF o XXE. Esta vulnerabilidad se corrigió en la versión 1.19.4."
      }
    ],
    "id": "CVE-2026-57234",
    "lastModified": "2026-10-25T23:10:00.167",
    "metrics": {
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            "attackComplexity": "HIGH",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 2.6,
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            "confidentialityImpact": "LOW",
            "integrityImpact": "NONE",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:L/I:N/A:N",
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            "role": "CISA Coordinator",
            "timestamp": "2026-06-25T15:05:35.927298Z",
            "version": "2.0.3"
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    "vulnStatus": "Analyzed",
    "weaknesses": [
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        "description": [
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            "lang": "en",
            "value": "CWE-178"
          },
          {
            "lang": "en",
            "value": "CWE-184"
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          {
            "lang": "en",
            "value": "CWE-611"
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  "severity": "LOW",
  "source": "nvd",
  "title": "Nokogiri is an open source XML and HTML library for the Ruby programming language"
}
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