All vulnerabilities
CVE-2024-42009

RoundCube Webmail Cross-Site Scripting Vulnerability

Roundcube WebmailApplications & CMS
Open in ThreatlineRecord JSON
CVSS
9.3Critical
ExploitationExploited in the wildAdded to KEV 9 Jun 2025CISA KEV
Exploit odds (EPSS)82.9%Chance of exploitation activity in the next 30 days, higher than 99% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed inNone listedNo source names a fixed version. Check the vendor advisory below
Federal deadline30 Jun 2025Remediation due date for US federal agenciesCISA KEV
CISA required actionApply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable. CISA KEV

What fixes it

No source in this snapshot names a fixed version. The vendor advisories under References are the place to check.

Timeline

  1. 5 Aug 2024, 00:00 UTCPublishedCVE List
  2. 9 Jun 2025Added to CISA KEVCISA KEV

Public exploit code and templates 1

  • Scanner templateRoundcube Webmail - Cross-Site ScriptingNuclei

Listed so defenders can prioritize. Threatline links to the source and does not host exploit code.

Description

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.

Text from CVE List

Affected versions 1

  • n/aaffected: n/aCVE List

References 7