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cvelistMitreCVELIST:CVE-2020-26870
HistoryOct 07, 2020 - 3:50 p.m.

CVE-2020-26870

2020-10-0715:50:09
mitre
www.cve.org
8
cure53
dompurify
mutation
xss
vulnerability
serialize-parse
roundtrip
namespace

AI Score

6.2

Confidence

High

EPSS

0.01

Percentile

83.7%

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.