CVE-2024-42009
CRITICAL CISA KEVCVSS v3
9.3
CRITICAL
EPSS Score
—
exploit probability
CISA KEV
Yes
known exploited
Exploitation
—
SSVC status
Description
A Cross-Site Scripting vulnerability in Roundcube through 1.5.7 and 1.6.x through 1.6.7 allows 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.
CISA Known Exploited Vulnerability
- Date Added
- 6/9/2025
- Patch Due Date
- 6/30/2025
- Required Action
- Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Technical Details
- CVSS v3 Vector
- 3.1
- Published
- 8/5/2024
- Last Modified
- 11/4/2025
- CERT-FR Advisory
- CERTFR-2024-ALE-010
- CERT-FR Link
- CERTFR-2024-ALE-010
Frequently Asked Questions
What is CVE-2024-42009?
A Cross-Site Scripting vulnerability in Roundcube through 1.5.7 and 1.6.x through 1.6.7 allows 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.
Is CVE-2024-42009 actively exploited?
Yes. CVE-2024-42009 is on the CISA Known Exploited Vulnerabilities (KEV) catalog, meaning it has been confirmed as actively exploited in the wild. CISA requires federal agencies to patch by 6/30/2025.
What is the CVSS score for CVE-2024-42009?
CVE-2024-42009 has a CVSS v3 base score of 9.3 (CRITICAL severity), with vector string 3.1.
Is CVE-2024-42009 affecting your environment?
Use isMalicious to check if any of your IPs or domains are associated with this vulnerability's IOCs.