UBUNTU-CVE-2026-103923

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Source
https://ubuntu.com/security/CVE-2026-103923
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-103923.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-103923
Upstream
Published
2026-10-02T00:00:00Z
Modified
2026-10-02T22:30:16Z
Severity
  • 2.1 (Low) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

KaTeX is a fast, easy-to-use JavaScript library for TeX math rendering on the web. From 0.11.0 until 0.18.2, KaTeX uses ordinary JavaScript property access for the renderer options object, the trust setting, default and processor setting metadata, and namespace lookup and group restoration, allowing inherited properties to be treated as explicitly supplied values. When Object.prototype is already polluted or an attacker controls the options object's prototype, attacker-controlled mathematical expressions can use an inherited trust value to enable trusted rendering and produce links capable of user-interaction cross-site scripting or loading attacker-selected external resources in a consuming application that inserts unsanitized KaTeX output into a page. KaTeX does not itself create the prototype pollution, and rendering an expression alone does not execute script. This issue is fixed in version 0.18.2.

References

Affected packages

Ubuntu:18.04:LTS / node-katex

Package

Name
node-katex
Purl
pkg:deb/ubuntu/node-katex?arch=source&distro=bionic

Affected ranges

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

Affected versions

0.*
0.8.3+dfsg-1

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "node-katex",
            "binary_version":  "0.8.3+dfsg-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-103923.json"

Ubuntu:20.04:LTS / node-katex

Package

Name
node-katex
Purl
pkg:deb/ubuntu/node-katex?arch=source&distro=focal

Affected ranges

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

Affected versions

0.*
0.8.3+dfsg-1

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "node-katex",
            "binary_version":  "0.8.3+dfsg-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-103923.json"

Ubuntu:Pro:22.04:LTS / node-katex

Package

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

Affected ranges

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

Affected versions

0.*
0.10.2+dfsg-8
0.10.2+dfsg-9
0.10.2+dfsg-10
0.13.11+~cs6.0.0-2
0.13.11+~cs6.0.0-2ubuntu0.1~esm1

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "fonts-katex",
            "binary_version":  "0.13.11+~cs6.0.0-2ubuntu0.1~esm1"
        },
        {
            "binary_name":  "katex",
            "binary_version":  "0.13.11+~cs6.0.0-2ubuntu0.1~esm1"
        },
        {
            "binary_name":  "libjs-katex",
            "binary_version":  "0.13.11+~cs6.0.0-2ubuntu0.1~esm1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-103923.json"

Ubuntu:Pro:24.04:LTS / node-katex

Package

Name
node-katex
Purl
pkg:deb/ubuntu/node-katex?arch=source&distro=esm-apps%2Fnoble

Affected ranges

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

Affected versions

0.*
0.16.4+~cs6.1.0-1
0.16.10+~cs6.1.0-2
0.16.10+~cs6.1.0-2ubuntu0.24.04.1~esm1

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "fonts-katex",
            "binary_version":  "0.16.10+~cs6.1.0-2ubuntu0.24.04.1~esm1"
        },
        {
            "binary_name":  "katex",
            "binary_version":  "0.16.10+~cs6.1.0-2ubuntu0.24.04.1~esm1"
        },
        {
            "binary_name":  "libjs-katex",
            "binary_version":  "0.16.10+~cs6.1.0-2ubuntu0.24.04.1~esm1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-103923.json"

Ubuntu:26.04:LTS / node-katex

Package

Name
node-katex
Purl
pkg:deb/ubuntu/node-katex?arch=source&distro=resolute

Affected ranges

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

Affected versions

0.*
0.16.10+~cs6.1.0-2ubuntu1
0.16.10+~cs6.1.0-5ubuntu1

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "fonts-katex",
            "binary_version":  "0.16.10+~cs6.1.0-5ubuntu1"
        },
        {
            "binary_name":  "katex",
            "binary_version":  "0.16.10+~cs6.1.0-5ubuntu1"
        },
        {
            "binary_name":  "libjs-katex",
            "binary_version":  "0.16.10+~cs6.1.0-5ubuntu1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-103923.json"