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Vulnerability Details : CVE-2020-26870

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.
Publish Date : 2020-10-07 Last Update Date : 2021-07-20
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- CVSS Scores & Vulnerability Types

CVSS Score
4.3
Confidentiality Impact None (There is no impact to the confidentiality of the system.)
Integrity Impact Partial (Modification of some system files or information is possible, but the attacker does not have control over what can be modified, or the scope of what the attacker can affect is limited.)
Availability Impact None (There is no impact to the availability of the system.)
Access Complexity Medium (The access conditions are somewhat specialized. Some preconditions must be satistified to exploit)
Authentication Not required (Authentication is not required to exploit the vulnerability.)
Gained Access None
Vulnerability Type(s) Cross Site Scripting
CWE ID 79

- Products Affected By CVE-2020-26870

# Product Type Vendor Product Version Update Edition Language
1 Application Cure53 Dompurify * * * * Version Details Vulnerabilities
2 OS Debian Debian Linux 9.0 * * * Version Details Vulnerabilities
3 Application Microsoft Visual Studio 2017 15.9 * * * Version Details Vulnerabilities
4 Application Microsoft Visual Studio 2019 16.0 * * * Version Details Vulnerabilities
5 Application Microsoft Visual Studio 2019 16.4 * * * Version Details Vulnerabilities
6 Application Microsoft Visual Studio 2019 16.7 * * * Version Details Vulnerabilities
7 Application Microsoft Visual Studio 2019 16.8 * * * Version Details Vulnerabilities

- Number Of Affected Versions By Product

Vendor Product Vulnerable Versions
Cure53 Dompurify 1
Debian Debian Linux 1
Microsoft Visual Studio 2017 1
Microsoft Visual Studio 2019 4

- References For CVE-2020-26870

https://research.securitum.com/mutation-xss-via-mathml-mutation-dompurify-2-0-17-bypass/
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-26870
MS Visual Studio Remote Code Execution Vulnerability
https://github.com/cure53/DOMPurify/compare/2.0.16...2.0.17
https://lists.debian.org/debian-lts-announce/2020/10/msg00029.html
MLIST [debian-lts-announce] 20201029 [SECURITY] [DLA 2419-1] dompurify.js security update
https://github.com/cure53/DOMPurify/commit/02724b8eb048dd219d6725b05c3000936f11d62d

- Metasploit Modules Related To CVE-2020-26870

There are not any metasploit modules related to this CVE entry (Please visit www.metasploit.com for more information)


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