CVE-2021-35043

Description

OWASP AntiSamy before 1.6.4 allows XSS via HTML attributes when using the HTML output serializer (XHTML is not affected). This was demonstrated by a javascript: URL with &#00058 as the replacement for the : character.

Category

6.1
CVSS
Severity: Medium
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.33%
Third-Party Advisory github.com Third-Party Advisory github.com Third-Party Advisory oracle.com Third-Party Advisory oracle.com Third-Party Advisory oracle.com Third-Party Advisory oracle.com
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://www.oracle.com/security-alerts/cpuoct2021.html third party advisory patch
https://github.com/nahsra/antisamy/releases/tag/v1.6.4 third party advisory patch
https://github.com/nahsra/antisamy/pull/87 third party advisory patch
https://www.oracle.com/security-alerts/cpujan2022.html third party advisory patch
https://www.oracle.com/security-alerts/cpuapr2022.html third party advisory patch
https://www.oracle.com/security-alerts/cpujul2022.html third party advisory patch

Frequently Asked Questions

What is the severity of CVE-2021-35043?
CVE-2021-35043 has been scored as a medium severity vulnerability.
How to fix CVE-2021-35043?
To fix CVE-2021-35043, 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-2021-35043 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2021-35043 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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