ACTIVELY EXPLOITED
CVE-2024-42009: RoundCube Webmail Cross-Site Scripting Vulnerability
| Vendor | Roundcube |
|---|---|
| Product | Webmail |
| Actively exploited | Yes |
| Added to CISA KEV | 9 Jun 2025 |
| CISA federal deadline | 30 Jun 2025 |
| Weakness (CWE) | CWE-79 |
Required action (CISA's text)
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Description (NVD)
RoundCube Webmail contains a cross-site scripting vulnerability. This vulnerability could allow a remote attacker to steal and send emails of a victim via a crafted e-mail message that abuses a Desanitization issue in message_body() in program/actions/mail/show.php.
SOURCES
Other Roundcube flaws
- CVE-2025-68461: RoundCube Webmail Cross-site Scripting Vulnerability
- CVE-2025-49113: RoundCube Webmail Deserialization of Untrusted Data Vulnerability
- CVE-2024-37383: RoundCube Webmail Cross-Site Scripting (XSS) Vulnerability
- CVE-2020-13965: Roundcube Webmail Cross-Site Scripting (XSS) Vulnerability
- CVE-2023-43770: Roundcube Webmail Persistent Cross-Site Scripting (XSS) Vulnerability
Data from NVD, CISA KEV, FIRST EPSS and vendor advisories. Updated 10 Nov 2026.