CVE-2020-26870
- Source
- https://cve.org/CVERecord?id=CVE-2020-26870
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-26870.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2020-26870
- Aliases
- Downstream
- Published
- 2020-10-07T16:15:18.030Z
- Modified
- 2025-11-20T11:23:06.819844Z
- 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
- 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
-
- https://github.com/cure53/DOMPurify/commit/02724b8eb048dd219d6725b05c3000936f11d62d
- https://github.com/cure53/DOMPurify/compare/2.0.16...2.0.17
- https://lists.debian.org/debian-lts-announce/2020/10/msg00029.html
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-26870
- https://research.securitum.com/mutation-xss-via-mathml-mutation-dompurify-2-0-17-bypass/
- https://www.oracle.com//security-alerts/cpujul2021.html
Affected packages
Git / github.com/cure53/dompurify
Affected ranges
- Type
- GIT
- Repo
- https://github.com/cure53/dompurify
- Events
-
Introduced0 Unknown introduced commit / All previous commits are affectedFixed
Affected versions
0.*
0.1
0.3
0.4
0.4.2
0.4.3
0.4.4
0.4.5
0.6.0
0.6.1
0.6.2
0.6.3
0.6.4
0.6.5
0.6.6
0.6.7
0.7.0
0.7.1
0.7.2
0.7.3
0.7.4
0.8.0
0.8.1
0.8.2
0.8.3
0.8.4
0.8.5
0.8.6
0.8.7
0.8.8
0.8.9
0.9.0
1.*
1.0.0
1.0.1
1.0.10
1.0.11
1.0.2
1.0.3
1.0.4
1.0.5
1.0.6
1.0.7
1.0.8
1.0.9
2.*
2.0.0
2.0.1
2.0.10
2.0.11
2.0.12
2.0.13
2.0.14
2.0.15
2.0.16
2.0.2
2.0.3
2.0.4
2.0.5
2.0.6
2.0.7
2.0.8
2.0.9
v0.*
v0.3