CVE-2023-43643

Description

AntiSamy is a library for performing fast, configurable cleansing of HTML coming from untrusted sources. Prior to version 1.7.4, there is a potential for a mutation XSS (mXSS) vulnerability in AntiSamy caused by flawed parsing of the HTML being sanitized. To be subject to this vulnerability the `preserveComments` directive must be enabled in your policy file and also allow for certain tags at the same time. As a result, certain crafty inputs can result in elements in comment tags being interpreted as executable when using AntiSamy's sanitized output. This issue has been patched in AntiSamy 1.7.4 and later.

How to fix CVE-2023-43643

To remediate CVE-2023-43643, upgrade the affected package to a fixed version below.

• —no fix listed
• —upgrade to 1.7.4 or later

Is CVE-2023-43643 being exploited?

Low — EPSS is 0.5%, meaning exploitation activity has not been observed at scale.

Affected packages (2)

• from 0
• from 0, < 1.7.4

CVSS scores

References (5)

• ADVISORYnvd.nist.gov/vuln/detail/CVE-2023-43643
• ADVISORYsecurity-tracker.debian.org/tracker/CVE-2023-43643
• PATCHgithub.com/nahsra/antisamy
• WEBgithub.com/nahsra/antisamy/releases/tag/v1.7.4
• WEB