Multiple Vulnerabilities Discovered in Roundcube Webmail Software

📌 Multiple vulnerabilities were discovered in Roundcube, an open-source webmail software, as reported on May 26, 2026. These flaws enable attackers to execute arbitrary remote code, compromise data confidentiality, and undermine data integrity. The notice does not specify individual CVE identifiers, affected versions, or exact attack vectors. The impacts include unauthorized code execution, unauthorized access to sensitive information, and potential manipulation of stored data. No details on exploitation in the wild or mitigation steps are provided in the notice. The advisory was published by CERT-FR.