XSS in Antisamy_project Antisamy

CVE-2021-35043

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.

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.015 (71.2th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2021-35043?
CVE-2021-35043 is a medium-severity vulnerability in Antisamy_project Antisamy, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2021-07-19.
How severe is CVE-2021-35043?
Medium severity. CVSS v3 base score is 6.1 out of 10.