CVE-2023-43643

Public Exploit
mXSS in AntiSamy

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.

Category

6.1
CVSS
Severity: Medium
CVSS 3.1 •
EPSS 0.46%
Vendor Advisory github.com
Affected: nahsra antisamy
Published at:
Updated at:

References

Link Tags
https://github.com/nahsra/antisamy/security/advisories/GHSA-pcf2-gh6g-h5r2 exploit product vendor advisory mitigation
https://github.com/nahsra/antisamy/releases/tag/v1.7.4 patch

Frequently Asked Questions

What is the severity of CVE-2023-43643?
CVE-2023-43643 has been scored as a medium severity vulnerability.
How to fix CVE-2023-43643?
To fix CVE-2023-43643, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2023-43643 being actively exploited in the wild?
It is possible that CVE-2023-43643 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2023-43643?
CVE-2023-43643 affects nahsra antisamy.
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