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Vulnerability · Published Jul 19, 2021 · Assigned by mitre

CVE-2021-35043

Medium 6.1

In plain English

A medium-severity security flaw in the libowasp-antisamy-java package (Debian). There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.5% (higher than 75% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS NVD)6.1Medium
Exploit odds (30 days)1.5%top 25.4% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known

Official 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.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12libowasp-antisamy-javano fix listedDEBIAN-CVE-2021-35043
Debian:13libowasp-antisamy-java1.7.4-1DEBIAN-CVE-2021-35043
Debian:14libowasp-antisamy-java1.7.4-1DEBIAN-CVE-2021-35043
Mavenorg.owasp.antisamy:antisamy1.6.4GHSA-9c8w-jrw3-q2c3
Ubuntu:22.04:LTSlibowasp-antisamy-javano fix listedUBUNTU-CVE-2021-35043
Ubuntu:24.04:LTSlibowasp-antisamy-javano fix listedUBUNTU-CVE-2021-35043
Ubuntu:25.10libowasp-antisamy-javano fix listedUBUNTU-CVE-2021-35043
Ubuntu:26.04:LTSlibowasp-antisamy-javano fix listedUBUNTU-CVE-2021-35043
Ubuntu:26.10libowasp-antisamy-javano fix listedUBUNTU-CVE-2021-35043

Affected products (as reported)

VendorProductVersions
n/a n/a n/a

References