UBUNTU-CVE-2026-50555

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Source
https://ubuntu.com/security/CVE-2026-50555
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-50555.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-50555
Upstream
Published
2026-06-22T18:16:00Z
Modified
2026-06-29T13:50:32.259367897Z
Severity
  • 8.6 (High) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N CVSS Calculator
  • 6.1 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

Angular is a development platform for building mobile and desktop web applications using TypeScript/JavaScript and other languages. Prior to 22.0.0-rc.2, 21.2.16, 20.3.24, and 19.2.25, a Cross-Site Scripting (XSS) vulnerability exists in @angular/platform-server's DOM emulation dependency (domino) when serializing the content of raw-text elements (such as <script>, <style>, and <iframe>). domino supports escaping raw-text elements during serialization to prevent closing-tag breakout. However, a Unicode index alignment bug existed in this escaping logic. In JavaScript, string lengths and character indices are calculated based on UTF-16 code units (where astral characters—such as emojis—occupy 2 code units / 4 bytes). If the bound dynamic text contained astral Unicode characters before the closing tag (e.g. </script>, </style>, or </iframe>), the index offset calculation in domino's replacement logic shifted. This misalignment caused domino to fail to replace or escape the closing tag, leaving it raw and unescaped in the output HTML. An attacker who controls the dynamic text can supply a payload containing both an astral Unicode character and a closing tag (e.g., 😀</iframe><script>alert(1)</script>). When serialized on the server during SSR, the browser parses the unescaped closing tag, exits the raw-text context early, and executes the subsequent <script> block, leading to same-origin Cross-Site Scripting (XSS). This vulnerability is fixed in 22.0.0-rc.2, 21.2.16, 20.3.24, and 19.2.25.

References

Affected packages

Ubuntu:22.04:LTS
angular.js

Package

Name
angular.js
Purl
pkg:deb/ubuntu/angular.js?arch=source&distro=jammy

Affected ranges

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

Affected versions

1.*
1.8.2-2
1.8.2-2ubuntu0.1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libjs-angularjs",
            "binary_version": "1.8.2-2ubuntu0.1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-50555.json"
Ubuntu:24.04:LTS
angular.js

Package

Name
angular.js
Purl
pkg:deb/ubuntu/angular.js?arch=source&distro=noble

Affected ranges

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

Affected versions

1.*
1.8.3-1
1.8.3-1ubuntu0.24.04.1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libjs-angularjs",
            "binary_version": "1.8.3-1ubuntu0.24.04.1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-50555.json"
Ubuntu:25.10
angular.js

Package

Name
angular.js
Purl
pkg:deb/ubuntu/angular.js?arch=source&distro=questing

Affected ranges

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

Affected versions

1.*
1.8.3-1
1.8.3-3

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libjs-angularjs",
            "binary_version": "1.8.3-3"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-50555.json"
Ubuntu:26.04:LTS
angular.js

Package

Name
angular.js
Purl
pkg:deb/ubuntu/angular.js?arch=source&distro=resolute

Affected ranges

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

Affected versions

1.*
1.8.3-3

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libjs-angularjs",
            "binary_version": "1.8.3-3"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-50555.json"
Ubuntu:Pro:16.04:LTS
angular.js

Package

Name
angular.js
Purl
pkg:deb/ubuntu/angular.js?arch=source&distro=esm-infra%2Fxenial

Affected ranges

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

Affected versions

1.*
1.2.28-1ubuntu2
1.2.28-1ubuntu2+esm1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libjs-angularjs",
            "binary_version": "1.2.28-1ubuntu2+esm1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-50555.json"
Ubuntu:Pro:18.04:LTS
angular.js

Package

Name
angular.js
Purl
pkg:deb/ubuntu/angular.js?arch=source&distro=esm-infra%2Fbionic

Affected ranges

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

Affected versions

1.*
1.5.10-1
1.5.10-1ubuntu0.1~esm1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libjs-angularjs",
            "binary_version": "1.5.10-1ubuntu0.1~esm1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-50555.json"
Ubuntu:Pro:20.04:LTS
angular.js

Package

Name
angular.js
Purl
pkg:deb/ubuntu/angular.js?arch=source&distro=esm-apps%2Ffocal

Affected ranges

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

Affected versions

1.*
1.5.10-1
1.7.9-1
1.7.9-1ubuntu0.1~esm1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libjs-angularjs",
            "binary_version": "1.7.9-1ubuntu0.1~esm1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-50555.json"