UBUNTU-CVE-2026-57236

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Source

https://ubuntu.com/security/CVE-2026-57236

Import Source

https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-57236.json

JSON Data

https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-57236

Upstream

CVE-2026-57236

Published

2026-06-25T15:16:00Z

Modified

2026-06-29T23:19:15.416128434Z

Severity

1.7 (Low) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U CVSS Calculator
8.2 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H CVSS Calculator
Ubuntu - medium

Summary

[none]

Details

Nokogiri is an open source XML and HTML library for the Ruby programming language. Prior to 1.19.4, calling Document#encoding= with an invalid encoding (e.g., a non-string, or a string containing a null byte) raises an exception, but only after freeing the document's current encoding string without replacing it. The document is left referencing freed memory, so the next call to Document#encoding reads invalid memory, which can cause a segfault or leak freed bytes into a Ruby String. Affects the CRuby (libxml2) implementation only; JRuby is not affected. This vulnerability is fixed in 1.19.4.

References

Affected packages

Ubuntu:16.04:LTS

ruby-nokogiri

Package

Name: ruby-nokogiri
Purl: pkg:deb/ubuntu/ruby-nokogiri?arch=source&distro=xenial

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

1.*

1.6.6.2+ds-2build2

1.6.6.3-1

1.6.7-1

1.6.7.1-1

1.6.7.2-3

1.6.7.2-3build1

1.6.7.2-3ubuntu0.1

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "ruby-nokogiri",
            "binary_version": "1.6.7.2-3ubuntu0.1"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-57236.json"

Ubuntu:18.04:LTS

ruby-nokogiri

Package

Name: ruby-nokogiri
Purl: pkg:deb/ubuntu/ruby-nokogiri?arch=source&distro=bionic

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

1.*

1.8.0-1

1.8.1-1

1.8.1-1build1

1.8.2-1build1

1.8.2-1ubuntu0.1

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "ruby-nokogiri",
            "binary_version": "1.8.2-1ubuntu0.1"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-57236.json"

Ubuntu:24.04:LTS

ruby-nokogiri

Package

Name: ruby-nokogiri
Purl: pkg:deb/ubuntu/ruby-nokogiri?arch=source&distro=noble

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

1.*

1.14.3+dfsg-2

1.16.2+dfsg-1

1.16.2+dfsg-1build1

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "ruby-nokogiri",
            "binary_version": "1.16.2+dfsg-1build1"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-57236.json"

Ubuntu:25.10

ruby-nokogiri

Package

Name: ruby-nokogiri
Purl: pkg:deb/ubuntu/ruby-nokogiri?arch=source&distro=questing

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

1.*

1.16.4+dfsg-1build1

1.18.2+dfsg-1build1

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "ruby-nokogiri",
            "binary_version": "1.18.2+dfsg-1build1"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-57236.json"

Ubuntu:26.04:LTS

ruby-nokogiri

Package

Name: ruby-nokogiri
Purl: pkg:deb/ubuntu/ruby-nokogiri?arch=source&distro=resolute

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

1.*

1.18.2+dfsg-1build1

1.18.10+dfsg-2

1.18.10+dfsg-3

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "ruby-nokogiri",
            "binary_version": "1.18.10+dfsg-3"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-57236.json"

Ubuntu:Pro:14.04:LTS

ruby-nokogiri

Package

Name: ruby-nokogiri
Purl: pkg:deb/ubuntu/ruby-nokogiri?arch=source&distro=esm-infra-legacy%2Ftrusty

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

1.*

1.5.9-2

1.5.9-3

1.6.0-1

1.6.1+ds-1

1.6.1+ds-1ubuntu0.1~esm1

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "ruby-nokogiri",
            "binary_version": "1.6.1+ds-1ubuntu0.1~esm1"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-57236.json"

Ubuntu:Pro:20.04:LTS

ruby-nokogiri

Package

Name: ruby-nokogiri
Purl: pkg:deb/ubuntu/ruby-nokogiri?arch=source&distro=esm-apps%2Ffocal

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

1.*

1.10.3+dfsg1-2

1.10.4+dfsg1-1

1.10.7+dfsg1-1

1.10.7+dfsg1-2

1.10.7+dfsg1-2build1

1.10.7+dfsg1-2ubuntu0.1~esm2

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "ruby-nokogiri",
            "binary_version": "1.10.7+dfsg1-2ubuntu0.1~esm2"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-57236.json"

Ubuntu:Pro:22.04:LTS

ruby-nokogiri

Package

Name: ruby-nokogiri
Purl: pkg:deb/ubuntu/ruby-nokogiri?arch=source&distro=esm-apps%2Fjammy

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

1.*

1.11.1+dfsg-2ubuntu1

1.11.7+dfsg-3

1.11.7+dfsg-3build1

1.13.1+dfsg-2

1.13.1+dfsg-2ubuntu0.1~esm1

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "ruby-nokogiri",
            "binary_version": "1.13.1+dfsg-2ubuntu0.1~esm1"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-57236.json"