Roundcube

Russia-aligned threat actor TA488 (Void Blizzard, Laundry Bear) exploited CVE-2025-66376, a critical XSS vulnerability in Zimbra Collaboration Suite webmail, for at least five months in 2025 via crafted emails to gain persistent access, exfiltrate user credentials, 2FA codes, and bulk emails from Ukrainian government and US defense industrial base targets.

Multiple vulnerabilities, including Server-Side Request Forgery (SSRF), Cross-Site Scripting (XSS), and Denial of Service (DoS), have been discovered in Roundcube Webmail versions 1.6.x prior to 1.6.17 and 1.7.x prior to 1.7.2, allowing remote attackers to impact service availability and potentially execute malicious code or access internal resources.

Multiple vulnerabilities in Roundcube Webmail versions 1.6.x before 1.6.16 and 1.7.x before 1.7.1 could lead to remote code execution, data confidentiality breaches, data integrity breaches, SSRF, and SQL Injection.

Multiple vulnerabilities in Roundcube Webmail allow an attacker to perform SQL injection attacks, bypass security measures, manipulate data, disclose confidential information, obtain extended privileges, execute arbitrary code, or perform cross-site scripting attacks.

A remote, authenticated attacker can exploit a vulnerability in Roundcube to execute arbitrary program code, potentially leading to complete system compromise.

The FrostyNeighbor threat actor is targeting Ukrainian governmental organizations with spearphishing emails containing malicious PDFs that deliver a JavaScript dropper (PicassoLoader) and ultimately a Cobalt Strike beacon.

Multiple vulnerabilities in Roundcube allow an attacker to perform a cross-site scripting attack and disclose confidential information.

APT28 (Fancy Bear) is actively targeting Roundcube webmail platforms to compromise government and defense email accounts, leveraging Roundcube's vulnerabilities and widespread use, primarily targeting Ukrainian entities in an activity tracked as Operation Roundish.