CVE-2024-42009

critical

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.

References

https://sonarsource.com/blog/government-emails-at-risk-critical-cross-site-scripting-vulnerability-in-roundcube-webmail/

https://thehackernews.com/2026/05/ghostwriter-targets-ukrainian.html

https://www.securityweek.com/exploited-vulnerability-impacts-over-80000-roundcube-servers/

https://www.darkreading.com/application-security/poc-code-escalates-roundcube-vuln-threat

https://thehackernews.com/2025/06/cisa-adds-erlang-ssh-and-roundcube.html

https://securityaffairs.com/178843/hacking/u-s-cisa-adds-roundcube-erlang-erlang-flaws-known-exploited-vulnerabilities-catalog.html

https://www.cisa.gov/news-events/alerts/2025/06/09/cisa-adds-two-known-exploited-vulnerabilities-catalog

https://www.helpnetsecurity.com/2025/06/09/roundcube-rce-dark-web-activity-signals-imminent-attacks-cve-2025-49113/

https://www.helpnetsecurity.com/2024/08/07/cve-2024-42009-cve-2024-42008/

https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2024-42009

https://roundcube.net/news/2024/08/04/security-updates-1.6.8-and-1.5.8

https://github.com/roundcube/roundcubemail/releases/tag/1.6.8

https://github.com/roundcube/roundcubemail/releases/tag/1.5.8

https://github.com/roundcube/roundcubemail/releases

Details

Source: Mitre, NVD

Published: 2024-08-05

Updated: 2025-11-04

Known Exploited Vulnerability (KEV)

Risk Information

CVSS v2

Base Score: 9.4

Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:N

Severity: High

CVSS v3

Base Score: 9.3

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N

Severity: Critical

EPSS

EPSS: 0.91411