Description
Apostrophe CMS versions between 2.63.0 to 3.3.1 are vulnerable to Stored XSS where an editor uploads an SVG file that contains malicious JavaScript onto the Images module, which triggers XSS once viewed.
Remediation
References
https://github.com/apostrophecms/apostrophe/commit/c8b94ee9c79468f1ce28e31966cb0e0839165e59
Related Vulnerabilities
CVE-2020-13934 Vulnerability in maven package org.apache.tomcat.embed:tomcat-embed-core
CVE-2020-27223 Vulnerability in maven package org.eclipse.jetty:jetty-server
CVE-2021-39150 Vulnerability in maven package com.thoughtworks.xstream:xstream
CVE-2020-13935 Vulnerability in maven package org.apache.tomcat:tomcat-websocket