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Cross-site Scripting in dompurify

Moderate severity GitHub Reviewed Published Dec 18, 2020 to the GitHub Advisory Database • Updated Feb 1, 2023

Package

npm dompurify (npm)

Affected versions

< 2.0.17

Patched versions

2.0.17

Description

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

Published by the National Vulnerability Database Oct 7, 2020
Reviewed Dec 18, 2020
Published to the GitHub Advisory Database Dec 18, 2020
Last updated Feb 1, 2023

Severity

Moderate
6.1
/ 10

CVSS base metrics

Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
Required
Scope
Changed
Confidentiality
Low
Integrity
Low
Availability
None
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Weaknesses

CVE ID

CVE-2020-26870

GHSA ID

GHSA-63q7-h895-m982

Source code

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