CVE catalog

CVE-2026-57438

Nokogiri is an open source XML and HTML library for…

[CVE catalog]

Nokogiri is an open source XML and HTML library for the Ruby programming language. Prior to 1.19.4, XInclude substitution performed by Nokogiri::XML::Node#do_xinclude replaced each <xi:include> in place, freeing the include node along with its children (such as <xi:fallback> and its descendants) and any namespaces declared on them. If an application had already exposed one of those nodes or namespaces to Ruby, the corresponding Ruby object was left pointing at freed memory. Using the object could result in invalid reads or writes to memory. This vulnerability is fixed in 1.19.4.

Severity
Medium · CVSS 6.2CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:H
Published
Source
[NVD] · [CVE record]
EPSS
0.13% · Oct 27, 2026

Projects and upstream resources

Reported versions and fixes

Each observation applies to its named package, distribution, and release. Distribution backports can fix a vulnerability while retaining an older upstream version number.

Version impact has not been established. The original provider fields are retained below.

Provider details and historical evidence
Original provider fields
{
  "package_releases": [
    {
      "name": "ruby-nokogiri",
      "status": "fixed",
      "release": "sid",
      "version": "1.19.4+dfsg-1"
    },
    {
      "name": "ruby-nokogiri",
      "status": "fixed",
      "release": "forky",
      "version": "1.19.4+dfsg-1"
    },
    {
      "name": "ruby-nokogiri",
      "status": "vulnerable",
      "release": "trixie",
      "version": "1.18.2+dfsg-1"
    },
    {
      "name": "ruby-nokogiri",
      "status": "vulnerable",
      "release": "bookworm",
      "version": "1.13.10+dfsg-2"
    }
  ],
  "fixed_versions": [
    {
      "bug": 1140769,
      "name": "ruby-nokogiri",
      "type": "source",
      "origin": null,
      "release": "sid",
      "urgency": "not yet assigned",
      "fixed_version": "1.19.4+dfsg-1"
    },
    {
      "bug": 1140769,
      "name": "ruby-nokogiri",
      "type": "source",
      "origin": null,
      "release": "forky",
      "urgency": "not yet assigned",
      "fixed_version": "1.19.4+dfsg-1"
    },
    {
      "bug": 1140769,
      "name": "ruby-nokogiri",
      "type": "source",
      "origin": null,
      "release": "trixie",
      "urgency": "not yet assigned",
      "fixed_version": ""
    },
    {
      "bug": 1140769,
      "name": "ruby-nokogiri",
      "type": "source",
      "origin": null,
      "release": "bookworm",
      "urgency": "not yet assigned",
      "fixed_version": ""
    }
  ],
  "distribution_packages": [
    {
      "name": "ruby-nokogiri",
      "ecosystem": "cpe",
      "fixed_version": "not yet fixed"
    },
    {
      "name": "nokogiri",
      "ecosystem": "cpe",
      "fixed_version": "1.19.4"
    },
    {
      "name": "nokogiri",
      "ranges": [
        {
          "fixed": "1.19.4",
          "introduced": "",
          "last_affected": "",
          "start_excluding": ""
        }
      ],
      "ecosystem": "cpe",
      "fixed_version": "1.19.4",
      "provider_record_id": "NVD-CVE-2026-57438"
    }
  ]
}

[Debian bug #1140769]

Publisher notes

[trixie] ruby-nokogiri: Minor issue [bookworm] ruby-nokogiri: Minor issue

OpenFactory catalog packages

Matching against OpenFactory catalog package versions is in progress.

[Debian 12 (Bookworm)]

  • [ruby-nokogiri]Unknown

    Source package: [ruby-nokogiri]

    Details (2)

    • 1.13.10+dfsg-2+b1 · amd64 · bookworm

      Affected

      nvd · ruby-nokogiri · debian · bookworm; nvd · ruby-nokogiri · debian · 12

    • 1.13.10+dfsg-2+b1 · arm64 · bookworm

      Affected

      nvd · ruby-nokogiri · debian · bookworm; nvd · ruby-nokogiri · debian · 12

[Debian 13 (Trixie)]

  • [ruby-nokogiri]Unknown

    Source package: [ruby-nokogiri]

    Details (2)

    • 1.18.2+dfsg-1+b1 · amd64 · trixie

      Affected

      nvd · ruby-nokogiri · debian · 13

    • 1.18.2+dfsg-1+b1 · arm64 · trixie

      Affected

      nvd · ruby-nokogiri · debian · 13

Observed:

References

[Debian Security Tracker] · [FIRST EPSS] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX] · [SUSE security advisories and VEX]