The U.S. Cybersecurity and Infrastructure Security Agency (CISA) on Monday added a medium-severity security flaw impacting Roundcube email software to its Known Exploited Vulnerabilities (KEV) catalog, based on evidence of active exploitation.
The issue, tracked as CVE-2023-43770 (CVSS score: 6.1), relates to a cross-site scripting (XSS) flaw that stems from the handling of linkrefs in plain text messages.
“Roundcube Webmail contains a persistent cross-site scripting (XSS) vulnerability that can lead to information disclosure via malicious link references in plain/text messages,” CISA said.
