UBUNTU-CVE-2026-126187

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Source
https://ubuntu.com/security/CVE-2026-126187
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-126187.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-126187
Upstream
Published
2026-11-12T00:00:00Z
Modified
2026-11-12T23:46:37Z
Severity
  • Ubuntu - medium
Summary
[none]
Details

React is a JavaScript library for building user interfaces. From 19.0.0 until 19.0.9, 19.1.10, 19.2.9, and 19.3.1, the react-server-dom-webpack, react-server-dom-parcel, and react-server-dom-turbopack packages are vulnerable to unauthenticated remote code execution through crafted payloads targeting frameworks that support React Server Components. The vulnerability only affects extremely rare cases where responses transport multiple typed arrays and an attacker-controlled value. Applications whose React code does not use a server are not affected. Applications that do not use a framework, bundler, or bundler plugin that supports React Server Components are not affected. This issue is fixed in versions 19.0.9, 19.1.10, 19.2.9, and 19.3.1.

References

Affected packages

Ubuntu:16.04:LTS
react

Package

Name
react
Purl
pkg:deb/ubuntu/react?arch=source&distro=xenial

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

0.*
0.9.4-3
1.*
1.2.0-2build1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libreact-ocaml",
            "binary_version": "1.2.0-2build1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-126187.json"
Ubuntu:18.04:LTS
react

Package

Name
react
Purl
pkg:deb/ubuntu/react?arch=source&distro=bionic

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

1.*
1.2.0-3
1.2.0-3build1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libreact-ocaml",
            "binary_version": "1.2.0-3build1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-126187.json"
Ubuntu:20.04:LTS
react

Package

Name
react
Purl
pkg:deb/ubuntu/react?arch=source&distro=focal

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

1.*
1.2.0-3build2
1.2.1-1build1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libreact-ocaml",
            "binary_version": "1.2.1-1build1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-126187.json"
Ubuntu:22.04:LTS
react

Package

Name
react
Purl
pkg:deb/ubuntu/react?arch=source&distro=jammy

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

1.*
1.2.1-1build2
1.2.2-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libreact-ocaml",
            "binary_version": "1.2.2-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-126187.json"
Ubuntu:24.04:LTS
react

Package

Name
react
Purl
pkg:deb/ubuntu/react?arch=source&distro=noble

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

1.*
1.2.2-1
1.2.2-1build2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libreact-ocaml",
            "binary_version": "1.2.2-1build2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-126187.json"
Ubuntu:26.04:LTS
react

Package

Name
react
Purl
pkg:deb/ubuntu/react?arch=source&distro=resolute

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

1.*
1.2.2-1build5
1.2.2-2
1.2.2-2build1
1.2.2-2build4

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libreact-ocaml",
            "binary_version": "1.2.2-2build4"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-126187.json"
Ubuntu:26.10
react

Package

Name
react
Purl
pkg:deb/ubuntu/react?arch=source&distro=stonking

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

1.*
1.2.2-2build4
1.2.2-2build5

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libreact-ocaml",
            "binary_version": "1.2.2-2build5"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-126187.json"