1mo ago · hacker-news
The U.S. CISA has added two critical vulnerabilities in Joomla extensions iCagenda and Balbooa Forms to its Known Exploited Vulnerabilities catalog due to active zero-day exploitation. CVE-2026-48939 and CVE-2026-56291, both rated 10.0 CVSS, allow unauthenticated remote code execution via arbitrary file upload. These flaws are being exploited in automated attacks to deploy web shells on vulnerable Joomla sites. Australia's ACSC has also warned of a global campaign exploiting similar CMS vulnerabilities.