UBUNTU-CVE-2020-26870

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Source
https://ubuntu.com/security/CVE-2020-26870
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-26870.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2020-26870
Upstream
Published
2020-10-07T16:15:00Z
Modified
2025-10-24T04:48:49Z
Severity
  • 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 - low
Summary
[none]
Details

Cure53 DOMPurify before 2.0.17 allows mutation XSS. This occurs because a serialize-parse roundtrip does not necessarily return the original DOM tree, and a namespace can change from HTML to MathML, as demonstrated by nesting of FORM elements.

References

Affected packages

Ubuntu:16.04:LTS / dompurify.js

Package

Name
dompurify.js
Purl
pkg:deb/ubuntu/dompurify.js@0.7.3~dfsg1-2?arch=source&distro=xenial

Affected ranges

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

Affected versions

0.*

0.7.3~dfsg1-1
0.7.3~dfsg1-2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "0.7.3~dfsg1-2",
            "binary_name": "libjs-dompurify"
        },
        {
            "binary_version": "0.7.3~dfsg1-2",
            "binary_name": "node-dompurify"
        }
    ]
}

Ubuntu:18.04:LTS / dompurify.js

Package

Name
dompurify.js
Purl
pkg:deb/ubuntu/dompurify.js@0.9.0~dfsg1-2?arch=source&distro=bionic

Affected ranges

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

Affected versions

0.*

0.9.0~dfsg1-1
0.9.0~dfsg1-2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "0.9.0~dfsg1-2",
            "binary_name": "libjs-dompurify"
        },
        {
            "binary_version": "0.9.0~dfsg1-2",
            "binary_name": "node-dompurify"
        }
    ]
}