Risk Letters

Exploited vulnerability

CVE-2024-42009

TLP:CLEAR

RoundCube Webmail Cross-Site Scripting Vulnerability

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.

Facts

  • Vendor: Roundcube
  • Product: Webmail
  • CVSS: 9.3
  • EPSS (probability of exploitation within 30 days): 82.9 %
  • On CISA's Known Exploited Vulnerabilities list since: 9 June 2025
  • First known exploitation: 9 June 2025
  • CISA's deadline for US federal agencies: 30 June 2025
  • Weakness: CWE-79
  • First seen by Risk Letters: 9 June 2025

Members see which Nordic sectors the flaw hits, and what to do about it.

Get the full brief

Data: NVD (public domain), CISA KEV, FIRST EPSS, MITRE ATT&CK, AlienVault OTX. NVD